Buy her some food. Give it to her because she is a human in need. Not everything is a transaction that must be paid.
I just ordered her a big box of Amazon food. I have always fed her from my own refrigerator when “I happened to be cooking something. Here, try some.” and that’s all she ate that day. And I didn’t get paid a dime for it, except the satisfaction of seeing her enjoy the food. She pays me back for some of the things I front her money for, but not everything. So do not think to lecture me. I’m way ahead of you.