I've got to say, I'm usually really pro-marriage, but I'm starting to side with PMA on this one. This sitch just keeps getting worse.
I think I already know the answer to this one, but if you knew about her issues, why did you marry her and start a family with her?
Also, I'm going to go out on a limb here, but has she ever threatened to kill herself? She seems to thrive on attention, and nothing says "rescue me" like vague threats about hurting herself.