Advice for a young, fully incontinent dog because of an injury Rescue

We rescued a small dog off the street. Vets say she's about 1-2 years old. She had some kind of an injury to her tail or lower back, which caused her to lose feeling in her tail, and be fully incontinent, both fecal and urinary. We did X-rays and the incontinence is caused by nerve damage in her lower spine. She walks, runs, and behaves normally aside from the incontinence. The vets gave us LOTS of pills and vitamins, including B vitamins, Omega 3/6/9, Magnesium, Calcium, and a LOT more. Every vet we've talked to either says there's no chance of recovery or very low chances of recovery. We live in North Macedonia, so there aren't even any options available for spinal surgeries. It's difficult enough to find a decent vet for normal consultation and medical advice.

Anyway. We've bought diapers, pads, and we've learned how to do bladder expressions so we can "empty out" the bladder so she doesn't dribble pee all the time. The urinary incontinence seems easier to manage, at least compared to the fecal incontinence.

So is there any advice on what we can do in regards to fecal incontinence? Any medications or therapies you can recommend that would help in healing nerve damage and restoring anal sphincter muscle control? Sometimes her poops are hard and larger, which is easier, but sometimes her poops are soft and smaller, which makes cleanup harder. What could we do to control her poops and make them harder, larger, and maybe less frequent?

Regarding Proin and urinary incontinence, I don't think it can help in our case, based on my (unprofessional) opinion - because her urinary incontinence is caused by nerve damage, not caused by hormonal issues/spaying.

Any advice or tips are welcomed, as this is the first incontinent dog we're taking care of.

It's a tough one.

My Mom cared for a cat who when a kitten had bit into an electrical cord. The electrocution paralyzed his back end. I remember my Mom had to give him an enema regularly to empty his bowels.

I'm not sure if that would work in your case.