Hey buddy - this might be a great time to validate W's fears etc.
Also, you want her last image of you before going to stay in a lonely apartment, to be a good one. Be supportive and offer to help and validate like there's no tomorrow. Don't offer any fixes, just listen to her.
When my W left the first time, I helped her pack and loaded her car for her. I was DYING on the inside but I didn't let her see me falling apart. I wanted her last memory of me to be one of me helping her reach her goal of wanting to be away from me. When she left, I fell apart. Then I left her completely alone. No calls, texts, nothing. I wanted her to know that her happiness was important to me even though it was going to destroy me.
She told me months later after we had reconciled that her last memory of me haunted her. I was supposed to the devil. She had no ammunition to keep labeling me that way.
Continue to be the great husband and father that you are. And with time, and a little luck, W will peek back over her shoulder and second guess herself.
