My husband's sis has two girls at the same school as my twins. She was really keen for them to go to same school, I now know why, since they started she keeps asking me to collect them keep them till she finishes work later.
I don't mind helping out when she's stuck (I work 3 days school hours she works full time) but I made it clear that I work part-time so I could focus on settling my two at school and am not constantly knackered, but this week I took girls to school 3 days as her Dh who usually takes them had a course at work, then yesterday evening she asked me to have the oldest as she's not well I lied and said I had something else on but when I saw her DH at school this morning he made a crack about me being a lady of leisure, we've never been that close she only rings when she wants something,but we get on okay advice on how to deal with someone who doesn't take no for an answer