Hi Susan,
Thank you so much for your reply and for your kind words. Molly is currently on Science Diet's Hepatic Health food, both wet and dry. We've also been supplementing with rice, sweet potatoes, and chicken and I think we're going to move over to making her food exclusively ourselves. She got tested for the copper, which came back negative - should copper in her food still be a concern for us?
In addition to her prednisone (as well as an antibiotic and appetite stimulant which were just added since her relapse), Molly is on vitamin E, Denamarin, and Ursodiol (milk thistle/sam-e combo). I haven't heard of zinc acetate but will definitely ask my vet! Have you had success with that?
Thanks again,
Melissa