Kevin, You don't need to DO anything right now to work on M. You're hurtin' ... injured ... you have to give the wound some time to heal. It will heal. There may be a scar that remains, but the pain of the open wound will be gone. Give your M some much needed "bed rest" for now until the wound can scab over.
You are goin' to feel the whole gauntlet of emotions including anger, resentment, sadness, etc... Its part of being human. Let yourself work thru these emotions, but don't act upon them. Don't take them out on your W. Come here and vent and for support. Find other means to release those feelings ... go to a gym ... go for some long walks, whatever works ...