Is she getting additional therapy nine? Are you monitoring any of her meds? Have you had a chance to read a book on her condition yet? Can you talk to her doctor/therapist WITH her?
I mean, I'm very glad you are getting along, but I also have a visual of you cuddling with a time bomb. Not an easy feeling.
I'm sorry about your parents. You have a lot on your plate right now. Stay strong and juggle this the best you can. Just throwing out some food for thought.