Hi, I'm a stepmum (SS lives with his Dad and me), I thought lone parents where your ex-p left the family would have lots of experience with this issue.
My SS seems to have just realised his mum didn't 'have to' move away and has just in last few days stopped blaming his Dad for not 'stopping' her leaving. I think he has just opened his mind to the possibility that his Mum made choices (she moved a long way, is there most of the time but does come back for regular contact).
He is now really, really sad. It is heart breaking to see him so sad about things.
I just wondered if your children had gone thru similar 'realisations' and if they had struggled, how you helped them, what to expect next.
Any help or experiences gratefully received. TIA.