Now that her medical history is "revealed" and the bicycle aside, is this really someone you want to be living with?

My $.02 is: Find someplace else to live. Sounds like all the makings of a "no win" situation. Of course I don't know all the details, or your motivation for moving in, in the first place, but from what I read in the OP . . . you don't really want to get involved.

Or, I should say, I wouldn't. What you do is your own decision, of course. But since you asked . . .

Rick / OCRR