Certainly you must be eligible for help from a local food pantry? Or a church group that is looking to give someone temporary help?
It doesn't sound like you are going to go without food for much longer, which means your daughter is going to lose her mommy to a hospital or the grave.
Eat lots of pb&j sandwiches and pasta dishes and chicken thighs/drumsticks and homemade soups. What are you feeding your child that you can't also eat?--meaning fix food both of you can eat -- freeze potions of a big pot of chicken or turkey and rice or pasta soup, beef stew, casseroles, etc. The Internet is full of cheap but nutritious meal ideas and recipes. Here's one site --