Please help, liver shunt care and diet for poor little Mickita

Hello,
I adopted/rescued a snorkie, Mickita, 3 months ago who was about to be put down because she was very ill and was having seizures all night, every night. I took her to the vet and after showing her a video, doing blood work, and stool samples she immediately diagnosed her with liver shunt and gave us latulose (2ml 3 times a day) and low protein food. No one thought she would make it long but we were gonna do all we could and make sure she had plenty of love while she was here and of course she had plenty of prayers. Well, the very first night after starting her medication she slept and had no seizures! I was so hopeful! Ive kept with the prescription food and lactulose although she now only takes 2ml once a day, she is doing so good Im so happy, my little miracle puppy. She’s so much healthier and has gone from being just over a pound to 3.5 lbs and has normal puppy energy! I feel stuck though and was wondering what others have done as far as care and diet, shots, and spaying. I hope to one day not have to give her medicine and wish I could give her a tastier variety of food. I would appreciate input immensely! Thanks in advance