Sorry I wasn't clear, I am the new partner. My partners ex-wife is not acceptingof her ex-husband's new partner (me). She is unreasonable with the childcare situations, rude, spiteful, very inconsistent and very irrational - towards my partner, as I have no direct contact with her, for this very reason.
I think because before the divorce she knew me (I knew both her and her husband at the time), so she might be finding it hard to accept that her now soon to be ex-husband is in a new relationship with someone she once knew?
Is there a way to overcome this, will some sort of closure be needed, or will it always be uncomfortable?