Is he snubbing you or is just that he's been through a hard time with family goings on and can't deal with guests easily? Not to say he's handling it gracefully or even a bit rudely, but it might not be personal. I'd just give him some space and, if there's an issue, wait for them to talk to me about it. I've found in life that sometimes it's best to just let people be. If he's in need of space he'll appreciate that you gave it to him. Just be there for your daughter if she's happy for visits. If there's something going on, she may need you for support.