Her unfriending your friends and family, while not pleasant, is not necessarily "going dark". Maybe she doesn't want to be reminded of you constantly b/c it is painful.
I'm sure that "adult conversation" will come off as pursuit. Don't you know what went wrong in your marriage? I feel like I know. I was there every day. I know my mistakes.
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.