"I agree with the idea that she didn't think she broke up our marriage - the fact is, she did. She looked at it from the outside and declared it dead, then talked more and more with x until he saw it, too"
Why do you believe this?
You see the problem in your XM yourself. Why do you then also think she broke up your M? The M was not working.
Do you really have to hold so tightly to her being the evil siren that intentionally broke up your M that otherwise would have been fine? It wouldn't have, it wasn't.
