Dh and his sister are NC along with PIL.
The issue he had was initially with his sister but I won't go into details largely because I only know one side and he doesn't talk about it so I only know bits but he never wants anything to do with SIL again and his parents have taken her side so he's NC with all of them.
We are expecting a dd and the name I love is the name SIL has called dh niece.
DH says we should use it because it's been years since he's thought of his sister and we'll never see them again and they'll never know or if they did (through other people) they'd realise how unimportant she is to him.
I'm not sure how I feel I love the name but is it unreasonable to use it?