I am so sorry you and your kitty are going through this!
I've been through it (my cat's ALT was over 1200 at one point, bilirubin went to 12, can't remember the others. AMY was high too). His journey was unusually long, and the vet is STILL shocked that Bear lived through it. I force fed and did daily fluids for 5 months. For the first 2 months I had to feed him every single 2 hours because he wasn't keeping much down. It was alot of tears and work, but we made it. He was as yellow as a school bus, here is a pic after his color got a little better:

Here is the thread, it's painfully long: http://www.thecatsite.com/t/215150/bear-is-at-the-vet-hes-very-sick-liver-looks-horrible
Since your cat is already showing some interest in food I think her journey through this won't be as long as Bear's was. :)
My biggest tips would be:
-To get her some Denosyl, it is a liver supplment. I don't know if it was a coincidence but Bear steadily improved after taking it and he is still on it 1.5yrs later. I order it from Amazon through Entirely Pets. I HIGHLY encourage trying it. It is supposed to lower the ALT levels. Its only about $20-30 depending on where you order it.
-Ask your vet about Ursodiol. Everything I read about liver failure meds mentioned it. My vet was hesitant to prescribe it, he didn't think it worked but gave in. This med REALLY helped him. If he missed a dose he would start vomiting again. This med makes the liver bile thinner, so it doesn't back up in the liver and cause issues. I really think this med had a HUGE part in saving Bear. It is expensive. I had to get his from a compounding pharmacy and it was $20 for 2 weeks of meds.
-Don't worry about what she is eating, if you can get her to eat something, give it to her. Fatty foods are horrible for liver patients, but at one point Bear really wanted my hamburger even though he wasn't eating. I used a george foreman grill to get all of the grease out and cooked him one. He ate it a couple times before getting bored with it.
-Take one day at a time, this is a pretty intense thing to go through. Just know that you are doing your best and that your cat is comfortable and doing ok right now.
-You could also try Milk Thistle (from a drug store) it is natural and works best if you divide to dosage up and give it 3 times/day. Ask your vet for a dosage, Bear's vet told me to give him 225mg/per day. It can cause nausea, so I only gave Bear 75mg/day but he wasn't really able to handle it well. It helps prevent the liver from getting more damaged. It is cheap $11 for a big bottle.
I don't know if anyone mentioned it but meat flavored baby food is a good food to try. Just check the ingredients for onion and garlic, avoid those!
I would keep up the fluids. It helps flush out the toxins and get them out of the system. Just keep an eye out to see if it's taking them longer to absorb. If they start taking a longer time to absorb then cut the fluids back by about 25%.
It is alot to take in, I know. But we are here for you!
Edited by KatKisses - 12/24/11 at 11:24pm