I think you're right not making contact with her family or friends, especially since you dont have kids.
Nor do you give XW a note or issue another grovelling apology. You've already done these anyway. I can imagine she'd view that with revulsion "Hey XW, I know I've said sorry many times before, but this time I'm really sorry and just wanted to remind you....".
It's tempting to do, but you must resist, and keep resisting. Have you read the lighthouse analogy post on it's own dedicated thread?
Cheers DS
Me: early 40's XW: nearly 50 T: 15 M: 5 BD: Jan 19 S:10 SS: 22 SD: 24