Nearly every week we have kids at our house staying for up to two hours. They usually invite themselves. One a few occasions one mum would ask at what time she'd collect her DD. I do not know whether I need to indicate the time or tell her to collect her DD when she can. She is a very nice woman and I do not want to say anything to offend her but I want her to set the time. I think she also asked if she should collect her DD now or in 30 min? Obviously I would say in 30 min. It is tricky sometimes. Once she said she would collect her DD once she cooks the dinner.