Long story short:
Ex partner whom we have a child with has dropped all contact with my eldest child.
He has been his father for over four years over 3 of which we lived together as a family unit.
We've been separated for a while now after a domestic violence incident.
In amongst various usual The Abuser's Manual claims of me being an unfit mother, blah blah blah, he is pretending I don't exist (whatever) but he is also pretending eldest child doesn't exist.
Their relationship had been strained for some time and he was abusive towards eldest child (EA) but this is really really low.
I'm doing my best to bolster eldest's self esteem.
Any suggestions would be most appreciated as to how to handle this