(((((exquisitetobe)))) - I'm so very sorry for your loss but am glad that you had that one last blessed moment with your mother.
Depending on your own wishes I might suggest that you thank your ex-h for his concern and kind thoughts but ask to be left to grieve on your own with your siblings and children.
You could suggest perhaps that he make a donation to a favourite charity of your Mother's in her name. That's what I did when my ex-in-laws passed and it did help me to know that I recognized their passing and that their children knew that I grieved with them even though I chose to not intrude.
More hugs (((exquisitetobe)))
On BD H52, W50 T27, M26 S21, D23 BD-9-Mar-16 D-15-Jan-18 Final-19-Apr-18 I am a storyteller. The story may do you no good. But a story is never for the listener. It is always for the one who tells