Yes, the diet may need to be modified to a liver (hepatic) friendly diet. May not make much of a difference in the long run, but worth discussing with your vet.
I run into a lot of digestive problems with these holistic diets. I do strongly feel you would be better off on her original food, at least for now, over this other formula.
If you are needing to feed things like hamburger because her appetite is falling off or poor, that is a serious concern.
Careful with hamburger. If not prepared with lower fat/oil in it, definitely can exacerbate some issues.
Here is a bland diet recommendation:
Boiled boneless, skinless chicken breast OR low-fat cottage cheese
Cooked white rice
*Never add on salt, pepper, oils, butter to any of the above
*Ideally, give 1/3 chicken or cottage cheese, and 2/3 white rice
Veterinarians will often prescribe some prescription bland diets as an easy alternative includingScience Diet I/D
*It is important to remember that if improving on a bland diet or prescription food like I/D, when you transition back to the old diet, do so gradually over 3-5 days.
Hope that additional information helps. Definitely, reply to me if there is any other way I may assist you. I hope my responses have been satisfactory?