Had an event yesterday for my sons school. We all got on so well and chatted and had a lovely time. At pick up today I said hi to one of the mums I really chatted loads to and she blanked me! I did or said nothing wrong, she is usually like this but I really thought we broke the ice yesterday and got along so well. She even hugged me as we left. Why does she now blank me? No weird topics or discussions were had, it was very light heated and jovial evening.