My colleague had had their rota changed and it affects her other job. She’s asked if I can stay later. Technically I could as my baby is out with her “father” and not home until an hour after when she’s asked me to stay till. But .. I’ve got things planned to do, wrap presents, prep veg, clean house. I had 3 hours spare I thought; am I an assehole to say no just because I need to get ready