Told the kids D14 and S12 when I found out about the affair. Told both of them and D7 when the D started.
D7 cried, and was very sad. Has had some issues at school, but counselor is talking with her every week. W and I don't fight, hardly talk anymore, I moved all my stuff to the basement, looking for a condo right now.
If wife is unreasonable to you and even her lawyer, you might want to tell daughter on her own - in case you wife spins the narrative that you're the sole cause for the D. I'm not a socialworker though, so I'd ask the vets on this board.
Once D7 found out, she has been ok with things - even went with me to see the condo I'm looking at. As long as she gets equal mom/dad time, and I'm trying to live as close as possible, it should make the transition as easy as possible. Not that the D won't put huge hurdles for my kids in the future - some are for me to tackle, some are for God. Just trying to make it day to day.
M46, EXWW46 M15 T17 D20, S19, D13 M - Addiction since 1998 W EA/PA #1 2013/2014 W EA #2 June 2015... BD 1 Big D talk 9/15 BD 2 - EA/PA disc 10/30/15 Served D 1/22/16 Divorced 5/25/16 (yes, that fast!)