I'm really sorry about how it went bad. None of her drama is your fault is what's for sure. It was totally okay for you to say how you feel while being solutions oriented and not bad-drama-oriented. That list was way too long for it to be reasonable. Her doing that drama in front of the kids was really sh**tty too.

Thing is, all this is the cold, hard and sad reality, that the relationship was really this bad, and that the highs were not going to ever come back. The initial intense "love emotions" of hers were too irrational, not real, either. Because of how she is so willing here to say that she does find other men more attractive, despite her original claim in the early "high" phase of the relationship that she never had an attraction to anyone like to you. She sounds like she'd originally said too much too fast emotionally without it really being more than some fantasy in her mind, without actually knowing you first and loving your real person.

One piece of advice. You might have high standards or not, I don't know what these standards are exactly like, but you may have to add some new ones to really realise what a good relationship truly feels like, so you can avoid toxic ones like this in future. I mean, right now you could be at risk for running into another one, so be sure to process it all and have it all add up before you try to date anyone else too soon.

PS: Articles on the dramatic (Cluster B) personality disorders could be a good read when trying to process all this. All that kind of bad drama is described and explained well in such resources. I'm not saying she was personality disordered but she could've very well had traits of some Cluster B stuff.