JM,

Stay strong. Stay the course. It sounds like you are doing a wonderful job with D5. This may be the most important outcome of this whole scenario (for you and me both). I have to think our respective daughters will only become more attached to their fathers. That is not a bad thing. We have to keep that part going at all costs and regardless of what WAW does. I know I am affected by WAWs actions and soemtimes my fuse is a little shorter than it should be with D7.
I admire your dedication to your daughter and hope that your WAW one day realizes what she has.
In the interim try to have some fun and do something for yourself!