General

My advice is to pass. You might feel comfortable with her, but you have no idea what her partner is like. Take it from someone who has had some experience with unstable people. Meth addict. Crack addict. You never know what you might run into.

It's a very hard situation, but if your uncomfortable with the relationship, then you should end it.

I'm not sure what you are looking for but I doubt guilt was on your list