It turned out she trimmed the list of people who can watch the post to only me and her most recent ex (with which she had a short intense and turbulent r/s while seeing the young guy in parallel which I know she actually feels very strongly for though she knows is unhealthy and futile - we talked openly and honestly about that when she opened it up with me, not hurt me, but to share and talk
She's trying to hurt both of you by trimming down the post.
I'm sorry to hear about her son, and your children as well. That's tough.
You are doing the right thing. Unfollow her on FB and remain NC. Detach. Give yourself distance / time to heal.
Hang in there.
- Mutt