She could eat the chicken/potato/veggies (grilled, baked, steamed, whichever) but you would have to leave off the seasonings and butter and it might be too much carbs for the dog, and she would still need some supplements like calcium for the lack of bone, maybe some additional omega 3, and some other vits/minerals! If you’re going to feed like that I would definitely get a complete doggie multivitamin (Nature’s Logic, Missing Link) and maybe an omega 3-6-9 supplement if these are not included in the multivitamin.
Dogaware.com has a homemade diet section and lists some supplements.
