It's ok - I went back and re-read and in fact YOU didn't say it -- SHE did. I knew I got that idea from somewhere. Sorry I pinned it onto you.
But it raises a good point. Her trust isn't there, and as long as she thinks that you hate her and want her away from your son, she's naturally and understandably going to fight tooth and nail -- I would too, and so would you, is my guess. So, in order for there to be any kind of reconciliation that both she and your son support, she might need to be convinced that she can trust you to stay out of THEIR relationship and keep your involvement to your individual relationships with each of them (J/C/ and Autumn).
I do know that you want this to work out with all of your heart. It's really a shame that it has taken such a bad turn