Definitely contact your DB Coach and has a chat w/him/her.
I know you love your wife completely, but you've got to give her some space and time to come to realize that you aren't the enemy here and that you aren't the issue of her unhappiness.
If you push, she's going to pull away and run faster than heck to get away from you and yes, this will be more justification for why she wants a divorce. Has she said anything to you about being controlling and/or manipulative, under appreciated or you don't listen?
Your wife knows that you love her very much and you don't need to remind her of it. She knows! So does everyone else! Drop the rope because you are holding on to it too tightly. Have faith in yourself, your history w/your wife and in the man above. Keep the focus on you and your family!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.