I need someone to remind me why I shouldn't talk to her?

She is not the one for you. She has way too many problems that are all her own. I have never heard of the diabetes with salt thing; it sounds like a manipulation on her behalf to make you feel sorry for her. Definitely toxic.. and that will outweigh any of the good that you see in her. Good Luck.. there is someone out there for you. It is not her.