Well I can go without her, I just really fear the safety of the kids if its just me. The other option is to take my youngest ones and allow her to take the oldest. Unfortunately, my oldest is good friends with OM's daughter. Lastly, it would be to just not go and allow my oldest to go with W.
I hate that with my sitch my oldest child is friends with OM's daughter. I don't want to appear as the bad guy keeping her from her friends.
SO pick one of these options, Pick the one that is best for YOU and your children.
Take her out of the equation. You are making changes for YOU, not to try to win her back.