DD has been attending nursery for around 3 weeks and yesterday when I went to pick her up there was a member of staff I hadn't met before. She didn't seem to recognise me and didn't know who my child was. She sort of just looked blankly at me and I stated that I'm here for x. She then got her for me and we left. It just unsettled me a bit as she didn't know me or who my child was. Not they would but it just got me thinking that anyone could pick her up and there was no question asked. Should I complain or am I being dramatic?