What a wonderful thing you are doing for your mom. I suggest making something that is not greasy, fried, too acidic (i.e. tomato based), or too fatty (cream based). It's tough, I know. Sorry. The safest is fish, chicken and turkey. Can you make a grilled/baked chicken? Maybe with some WELL cooked veggies and mashed potatoes (no gravy). Pork chops always sit well with me too.