Girl A's birthday falls on a Saturday this year. She will be 13. She has been discussing this with her best friend, girl B, for many weeks and that she will be having a party and sleepover on that day. No formal invitations have been sent but it was a definite arrangement.
Girl B receives a invitation for another party on that day which finishes at 8pm. Mum of girl B has asked if girl B can come to girl A's party late so that she can attend both parties.
Mum of girl A is inclined to say no because girl B and mum of girl B knew girl A's party was on that date. Girl A would say yes because she really wants girl B there.
WWYD if you were mum A?