Don't know if this is in the right place, but any views on how I should deal with/think about this would be good.
A few months ago my DS rode his scooter into another Mum's car at some speed by accident (he is four years old). I told him off for not being careful (but to be fair it was a new toy and he was not that confident), checked the car and thought he had not caused any damage. I had literally looked away for a second and couldn't believe it had happened so quickly. All of the children had been scooting in a large car park, including this Mum's DS.
The Mum saw it happen and came over. She called me back and said "This damage wasn't here before". Then I noticed the wing mirror had been knocked off a bit. She was quite annoyed. I had not looked at that part of the car because I did not think he had collided there. I apologised and said I'd pay for the damage; asking her to send me a quote. I gave her my phone number and that evening she sent me a quote for the part (her DH would fix it) and I paid her by bank transfer that evening.
Anyway, when my DS started school in September, I realised her DS attends the same school. Even though our children are in different years, there is some cross-over with our friendship groups and we end up in the same places. I see her a lot and she is very frosty towards me. She obviously knows who I am but never says hello and makes it very obvious that she is snubbing me with dramatic looks away or frosty stares. Her friend has now started doing it too. I feel really uncomfortable going into the school grounds or park when she is there.