I guess one thing I should also mention, is that there has been a history of schizophrenia in her family. Her grandmother was diagnosed with it.
The priest that I went and saw last week raised concerns that he might think there are some balance issues with her at the moment as alot of her comments seem out of the ordinary. I asked to him to reserve judgment, cause he would really need to get her side of the story before making judgment. He said he would, but he himself has seen unusual behaivour from her over the last few months. He is genuinly concerned for her. I told him that if she did have any issues like that, I wouldn't walk away. I would only walk away if she cheated or if she tells me she is happier without me (which she did yesterday)
He plans on visiting the family next week to have dinner with them. He was very supportive when my W's father passed away 4 months ago. He is also the type of person to say what he feels and won't sugar coat anything. From the conversations I have had with him, he seems very knowledgeable, sincere and has a wealth of experience in dealing with matters like this. He has also had formal councilling training. I feel guilty for thinking maybe this is a reason that she wants to end it, and that she is not thinking clearly, but at the same time, I do hope that he is wrong about his fears.