No one gives without an expectation of something in return- be it their own emotional gratification, the belief that karma works, a fairy god afterlife, guild based debt... if you think this woman is caught up in some sort of emotional repayment scheme of her own creation, and shes hurtimg herself or her loved ones in the process, you should scale it back/ avoid her.

Mark of a good person

Ask her if she’s sure she is able to give of herself so much, and that you appreciate her offer of help, but worry that she may be overstretching herself. If she still insists that she’d like to help, I’d accept it graciously.