So I should probably leave what kind of levels of protein, fat, carbs, etc. is best in a weight gain food to the more experienced people on this forum, but I can give a little advice. If your dog has been completely checked for health issues that might keep her from losing weight, she probably just has more calories going out than in. Maybe you could use the dog food calculator on this site to figure out how much you should feed her, put in the weight you want her to be, not the weight that she is currently. You could also feed slightly more than the given amount. I hope this is helpful!
