My DD is in reception and has a friend she’s closest with and me and her mum seemed to be getting on really well and she would always make an effort to talk to me and I would too. This last week she has took to blanking me and not even saying hello. I keep trying to make eye contact and she won’t look or even smile or anything. Even if we only walked past each other in a morning we’d both say hello but not anymore. DD is still friends with hers. Aibu to wonder what I’ve done wrong?