she's not unique, trust me, nothing of what you just mentioned is unique, instead of asking us to read 10 pages of your situation, why not spend some more time browsing the existing threads.
If your wife really wants to leave you, ask her when she's planning on leaving. Simple, direct, straight to the point. Ask her if she would like help packing.
You've been married 5 months and she wants to divorce you already, you're going to tell me there is no one else in the picture, no other man, she just wants to divorce you, what could you possibly have done in 5 months to drive this woman away? Were you physically abusive with her?