Welcome Wil_Verstaan. How long have you been in a relationship with your fiance? I suggest she see a Psychiatrist for a diagnosis. I would also suggest she have a full physical exam by a GP. There are medical concerns that can mimic mental illness symptoms. I would take care of yourself and honor your feelings. Seeing a therapist is an excellent idea. The book in my signature is for family/friends of those diagnosed. It's excellent.