She shouldn’t be left to pick up your pieces after you have gotten what you needed from her.
Although, she would probably drop everything for you, it doesn’t mean she should. And it certainly doesn’t mean you should expect her to.
If you borrow money, make sure you are paying her back. You don’t know how strapped for cash she might be.
If she babysits for you, make sure you return the favor. She needs some time alone too.