Dd1's new friend has stayed for dinner the last two day. They have only known each other two days .
This is absolutely fine with me. The girl is a pleasure to have around. Wonderfully polite and helpful and keeps dd1 entertained.
DH thinks I should be careful not to let her stay too often because her mum might get annoyed that she is not eating many meals at their house. Would get annoyed if this was your child? Surely if it was an issue the mum would ask her child to come home for tea?