I think that you shouldn't be "acting" so much as doing/showing. She doesn't want to see melty man all crushed by her leaving. She'll be attracted to strong yet humble guy who is a good father, and in control of his life.
All the stuff about acting like the off week parent isn't around won't matter until she's out of the house and really experiences the results of her actions. Just spend as much time with your kids now. Don't let her cake eat though.
