Unaluna, lol!

Your gf is not playing it smart. If she just went along with your way of going about this, she’d see that your ex is not a threat, she’d bond with your kids and even your ex, she’d find her place in the family, plus things will change and vary on their own over time not making her the bad guy, she’d come off looking great have you, your kids, the whole shebang.

I agree it won’t stop with just this. She’s made this too great an issue. I don’t even think you should bring her to your Thanksgiving dinner now because there will be too much tension and may be a scene. I’d give her the speech about how this has made you too stressed out and you just want to get the dinner behind you and not argue about it with her anymore. Then she’ll probably break up with you. I’m sorry.