Main culprit is IC (Find your own voice/get on with your life)
Former MC (don't know if she is still seeing him by herself - she was)
DIL and SIL don't get much detail. DIL said "everyone" (?) is telling her not to do this., that she doesn't know what to do. SIL says she's "very upset over breaking up/ending the great blended family you guys built," "she doesn't know what will become of her alone", and "She's in a lot of pain. I've never seen her like this."

The first sentence is the answer (and I have no control over/access to IC).
The rest are just...commentary.

Despite Sep and D request, maybe I shouldn't be TLRing this. She's insecure along with being confused and in pain and whenever she reads my mind, she goes way off the charts to fiction-land, so Lord knows how she's interpreting my LTRing.

Gardener

"My soul, be satisfied with flowers,
With fruit, with weeds even; but gather them
In the one garden you may call your own."
Cyrano deBergerac