My friend is looking after the baby DS of a friend of hers today, on the understand that the baby would be picked up two hours after he was dropped off. My friend has other things she needs to do today, including picking up her own daughter from the GPs, but it's all been delayed because the mum of the baby she is looking after at the moment has 'decided' she can't pick up until two hours after the agreed time. My friend is a soft touch and has not demanded the baby be picked up on time, but she has expressed her annoyance that she wasn't told about the changed time until the baby was with her. She can hardly leave him on the doorstep for pick up can she?
So AIBU in thinking that unless an emergency comes up during the time someone is babysitting your child(ren) (and this is not an emergency, FWIW), you should stick to the pick up time and not take the piss?