If she gets excited that you are going, go have fun.

If she wants to go with OM and not you.

Then a calm, firm, confident statement containing at lease these points:

1) If you choose to go with OM. I am done being married to you.

2) I will pack up your stuff and you can live someplace elses.

"What is best for my kids is best for me"
Amor Fati
Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712