When you demand a valid reason for her to swap the kids on her days, I can't help but think she is thinking WTF. Her business isn't your business! You aren't her dad! You either can or can't, keep it simple. She has to prove legitimacy to you? You know how this sounds?
And a 48 hour notice? I don't get that either. There might be a time when you want her to babysit for your social affairs, why not make the best of it?
Her inviting you to her family stuff is bad? Sounds like she is trying to be amicable, her folks are still your kids grandparents. If you don't want to go just say that but imagine you may portray a certain attitude to her when she asks this.
Your responses to her are super wordy and confusing. You're upset that she gave you the "first right of refusal" as you put it...why? You're just snooping her personal life bc you want to know if she's dating. You're full of pain and it is surfacing in the form of your anger and insecurities. You have to make a change there.
I'd attend her family's events occasionally too just to show them how big your balls are. Take the challenge, pass the test.
H 34 W 29 BD 3/12/18 Divorce Busted Spring 19
It is not things that bother us, but the stories we tell ourselves about things.