We're NC with DH's parents. They are difficult and controlling and made life hell when I was pregnant and then when DS was born.
Eventually, it came to a head when DS was 11 months old. They were awful in a restaurant, shouting at us, his mum stormed out, his Dad stayed to argue more, and then they left. Me and DS have not really seen them in the 18 months since, except two occasions when they were outside our house, both of which ended in shouting.
DH went to see them once in January of this year. They weren't apologetic - he said in their usual style, his mum cried a lot, and then they rewrote history, denied anything that made them look bad and were not at all argumentative. He's not been back, although he's arranged to go and see them a few times and then cancelled. He admits he's happier not seeing them but does feel some guilt. His parents have stopped coming over, but do message him monthly or so with random updates.
Last month they messaged that they are getting older and would need his help soon, and so the relationship would need to improve. They also said they were gravely disappointed to have missed out on so much time with their grandson. He didn't reply.
Before we fell out, they'd been threatening to move close to us for years, and DH had always put them off. FIL was never keen to move, so it didn't happen. Yesterday they listed the house. I am now very nervous that they intend to move close to us.
AIBU to be really anxious about this? They made life awful. They've got previous for looking for us (they once drove around restaurants looking for us because they figured we'd go out and eat after registering the baby, and then insisted on crashing the meal and awkwardly sat with us for two hours). I'm also pregnant, which they don't know and we hadn't intended to tell them.
I know there's nothing we can do about it, but it feels horrible. Realistically moving isn't likely to be on the cards with the state of the economy right now.