What a lovely picture of Shasta! I think that if she is healthy and not losing weight then I would do as you have done and accept that if she does not want to eat then not to try and entice her to do so. As long as she eats when she considers right for her and stays healthy, one meal a day should not be a problem. It is a bit like people - some want their three square meals a day - others want four or more small meals - and others, like me, are happy with just one main and one light meal each day.