So sorry to hear of the loss of your daughter. Who knows? Maybe it was the last straw, maybe not. The only thing you have control over is yourself at this point, and why not take this opportunity to get to know yourself, recover, grieve and start new, regardless of your wife's decision. Stick around, I'm glad you're here.. it's been a great place for support for me for a couple of years now!
What's your plan?