For years it's been like treading on eggshells, always only a matter of time before I do something that offends them greatly and we aren't on speaking terms, until I either phone them and say lets put it behind us, or make DH do the same.
On Friday, MIL came round to deliver a card with cash in for DS's birthday next week - they don't trust the post. I didn't know they were coming and was out, on foot 
which meant the car was on the drive.
I didn't answer the door AS I WAS NOT THERE. But apparently, she knows that I was and that I ignored her.
I don't think I'm going to make that call this time.