New here, wits end! Questions

I think my little Daisy doesn't know what to do by herself. She clearly has always been surrounded by other dogs and now living a life of solitude with me and my housemates, things are so quiet. She doesn't have a playmate and that's why she chases my cats around.
Maybe she's so lonely when she was used to loud and excitement and always being surrounded by other small dogs.
I don't know what to do. I don't want to give her up as it's only been a few weeks, she still has to get spayed and heal. I feel like I have taken her away from her environment that she knew and am trying to mould her into a new environment that she may never be comfortable in? I'm just in a rock and a hard place, she's such a good dog. But I have my heart shatter every time she whines and squeals and absolutely loses her marbles when I am away from her. But I also cant stop my life to sit beside her all the time. I'm an at home hairstylist so when I fostered dogs they were great to be here, when I go to the basement to be with a client she's barking like crazy at the top of the stairs, when she eventually comes down she's Jump jump jump jump chase a cat jump jump jump all over me and I can't even work. I have had to cancel clients because of no sleep from her flipping out at every noise all night or simply because she is too much while I'm trying to work with her around. I do my best to wear her out but nothing. She won't nap all day at all, she is constantly on high alert, when she's outside she's ripping and scratching the door whining and squealing piercingly loud. I just can't catch a break. I don't want to feel like I'm going to fail this little creature, I'm actually in tears typing this.

Also, thank you to everyone that has replied. I super appreciate all the input.

When you say she was rescued from a puppy farm, did you get her from a rescue or through someone else , what age was she when rescued.

I got her from a rescue, she was at the puppy mill for her whole life. She's just over a year old. The rescues had her for about 2 weeks and then I adopted her.

Did they tell you anything about her behaviour and separation anxiety?
How they came to get her , it all helps build up a picture of her behaviour.

Puppy farm dogs have no human contact as such except for feeding, they are not socialised and are not used to affection, everyday house things like hoover, washing machines ect: freak them out,most tend to hide away when they first arrive home and avoid human contact, they are usually hard to house train not used to leads ,the list goes on.
To get her used to being shut in crate have you tried having it beside your bed at night, when you go to bed say to her ‘ bedtime’ putting her in crate, that way she will feel more secure with you beside her and help get used to crate being closed.

I've tried the crate beside my bed, crate with a blanket over it, treats and toys and my shirt in it, everything.
The rescue had 9 dogs living with them and she was just fine there, it seems she's only comfortable when there's other dogs around.

In that case, do you think you could you find the time and space for a companion for Daisy?
I'm not thinking of another problem dog, but there are plenty in rescue, 'through no fault of their own'. It will need some thinking through, but could be less stressful than what you are coping with at present.

I don't have a house large enough for another companion.
I haven't seen my poor cats I'm terrified they've run away on me. I feel like I've let them down, their safe home is now a scary place to be chased and attacked.
Daisy is so loud it's piercingly loud, and she dosent just bark it's a frantic panic bark that she's squealing and flailing everywhere she can't seem to calm down at any noise.
I feel like I'm failing my poor pets all around. I feel so depressed.

If the dog has terrified the resident cats like that, honestly maybe this isn't the best situation for everyone involved. It's really unfair to them to have a newcomer destroy their lives like that. This isn't your fault, and it isn't little Daisy's fault, but sometimes dogs with these issues need very specific living situations to truly recover. And also, there's always the small chance that the dog can't be rehabilitated.

Don't beat yourself up Sab. You have done your best, but it seems that this placing isn't going to work. For the sake of your business and your cats, it would perhaps be better if Daisy returned to the shelter. Have you discussed the situation with them? Maybe they will be able to pair her with another dog, and then place the two of them in another home together. Let us know what you decide to do.

I wish I lived nearer. I am [just] getting used to that breed mix and would happily have Daisy as a companion for Tikva.

I have sent videos to the rescue of what happens when I open the door to come home etc. And they told me she apparently wasn't like this when she was with her fosters. Seemed a bit weird to me that she was suddenly like this.
I have been exhausting myself and her with tons of exercise, lots of walks, it's very frustrating. I can't get simple things done around the house without her jump jump jump jump jump all over me constsntly. She doesnt listen to "no" or "off" she thinks it's playing. There's no off switch with her all day she's just so extremely hyperactive.and hyper aware of EVERYTHING.
I cant sit down she wants to now jump at my face and try to nip my face (this is new) it's consrant jumping and running and wailing I feel like a new parent of an over the top adhd child.
I have tried melatonin to calm her down as a trainer suggested but it hasn't even phased her. I can't leave my house at all unless someone is home because she's so fast racing for the door that I can't close it. If I crate her she pees all over herself and almost hurts herself trying to get out screaming and wailing.
I truly think because she has been brought up in a life of chaos that's all she knows, and she's frightened to be away from the one thing she feels safe around. Also I think she does need other dogs around, to burn off the energy and feel like she's a part of a pack or something. Me and the two cats she's probably feeling lost. She I believe needs doggy friends as her whole life has been surrounded by them.
If I take her back I'm looking at another 9 hour drive to drop her back off. It's expensive and time out of my work day, but I guess that's what it might take. I feel like I'm letting her down but I want her to have the best and most fulfilling life since she's bursting wit love.
I'm going to take her to my exes this weekend to see how she gets along with his minpin since he's been looking for a little companion for her. Maybe they will be a match? This is so hard. I can't help but beat myself up thinking I let this poor little creature down.

I do not know what else to say. But I really do wish that I lived near you as I have just about gotten used to that mix, and for those who have never come across it, it can be diabolical. There have been times that I have really been frightened of Tikva.

I really would adopt Daisy if I could but I am half way across the world from you.

Let us know if Daisy and your ex's Min Pin hit it off. That would be a good result if it works out.

Uodate:
Daisy has started taking well now to the melatonin. It doesn't knock her which is of course not what I wanted, it's helped her to stop the shakes and the wailing flip outs.
I let her outside to run around as I do, she doesn't do anything unless I'm out there so I stand out there so she can feel safe running around we play etc. I went inside without her and for the first time she didn't try to rip apart the door!
She sat at the back door in silence to be let in, which she got lots of praise and a treat for. I think she's starting to understand that it's okay to not have me around. She no longer freaks out at the bottom of the stairs when it's blocked off, I can shower in peace. She still of course loses her marbles at anyone walking in the door and goes growl a bit but her tail is wagging and not between her legs this time. The melatonin has been a HUGE help in calming her enough to learn. She still needs to e spayed and is finding her heat cycle, is this why she goes ballistic when other dogs bark? Anyways, I still have faith in this little doggy, I'm trying my hardest to work with her, the melatonin has calmed her enough where she can start learning and not always be in flight mode. I'm still going to see how she reacts with my exes dog and see if they are a good fit. I just want the best for this little pup if she's with me or with someone else. Progress is starting to show and my god I am almost crying I'm so happy to see it, even if it's just a tiny bit there's still progress!

That is quite a sudden turnaround, but I am very pleased for you. Just out of interest, was the melatonin prescribed by your vet? I think it is only available on a scrip over here, but I believe you can buy it over the counter in the US.
Has she been better with the cats too? I hope she continues to improve, and you will be able to keep her. Usually, once they have turned the corner, and begun to settle and build trust, they come on in leaps and bounds.

The vet and a trainer from the rescue recommended her taking the melatonin. I'm in Canada and we just get it pretty much anywhere. It's really helped her anxiety enough that we can start learning together. She still of course has the outbursts as it's in her nature by she's able to listen and isn't in a panic mode at all times.
She was across the room from one of the cats which was GREAT! she didn't lunge at her, but I'm sure if the cat took off running she'd chase. It seems to be the teeniest baby steps

Melatonin [human product] is available from iHerb in the US. I used to give it to Pereg when she had major epileptic seizures. It is safe and really can help..

Slowly slowly - it is not an easy mix but it does get better. Slowly slowly. It has taken eleven months for Tikva to calm down, stop screeching for no reason, and stop biting me.

There are some other products that might help Daisy although if Melatonin is helping her then fine. I take it myself if I am having problems with sleeping. Not as something to help me sleep but it helps if I wake in the night.

These are canine products and helped my Pereg so much.

http://il.iherb.com/Rainbow-Light-G...ken-Flavor-For-Dogs-30-Chewable-Tablets/27646

This was a total savior when Pereg was bad.

This might help Daisy

http://il.iherb.com/Actipet-Anxiety...Separation-for-Dogs-90-Chewable-Tablets/37484

And there is always this - just make sure it is the pet one so has no alcohol.

http://il.iherb.com/Bach-Original-Flower-Remedies-Rescue-Remedy-Pet-0-7-fl-oz-20-ml-Dropper/54720

I am not sure whether those links give the shekel cost but you should easily get the dollar cost.

She's been having a very hard time being outside alone. She's destroyed my back door with frantic shredding.
Ugh it's so exhausting.