My MIL & FIL are pretty poisonous individuals and after a particularly unpleasant Christmas, they decided they couldn't bear to have any more to do with us. DS1 was almost 3yo and DS2 c. 6m (4 years ago)and we haven't seen them since.
Relations with DH's sister have never been great. They didn't get on particularly well as children and she made things unpleasant in the run up to our wedding (I think a young girl's jealousy, as she had recently split from the man she thought she would marry) Anyway since then we've been polite, but not particularly friendly and see her & her family a couple of times a year. (They don't live close by)
We sent Christmas presents and they sent some to us. DS's sent thank you notes, but we have heard nothing from them. Since then it has been DH's birthday and he heard nothing and I have sent birthday presents for her and her DH. We have had no acknowledgement. Last week was my DS1's birthday we he received nothing too. It's not about the lack of presents, just that it's odd that we haven't heard from her when we normally would.
I have tried to get DH to ring his sister, but his response is "sod them all". I could contact them myself, but whenever I have tried to intervene on his behalf in the past, I've always ended up making things worse. TBH my life is much more pleasant without them, but I feel sad that DH appears to be losing all contact with his family. He says he doesn't care and that we're his family now . I'm also a bit concerned that there could be something seriously wrong. WWYD?