Dd did her after school activity as usual tonight. It has a waiting room attached for parents with refreshments for sale, it's in the middle of nowhere and the activity is only an hour long so it doesn't warrant going home. There's a woman there whose dd started the activity just before Christmas who also has a 3/4 year old son who she takes along. Every single week he asks for chocolate and crisps from the refreshments on sale. Every week she says no and he has a huge tantrum; screaming, shouting, hitting out, throwing things and so on. She ignores him and chats to her friend. This usually goes on for half hour, then she gives in and buys him the chocolate and crisps. Toddler dd can't play because he storms over screaming at her and she's scared of him and I leave with a banging headache each week. Aibu to say something next week?