IIRC Van Alden's wife was pestering him to allow her to move down to live with him while he was on assignment. That he could not allow, not least b/c of the business with Lucy. So he may have wanted to show her first hand all of the "sin" in the city so that she would be disgusted and unwilling to live there.
how many episodes will it take till she finds out though...i mean really this could be a golden thing for nucky to get rid of van alden.
