My ds has a friend (they were in nursery together) who we see quite a lot of. The mum has asked if we could mind him about 3 times recently (last two weeks)- for afternoons. Although not always convenient, I've done so as its fine, we like him and its more like a playdate. Anyway, she has offered to reciprocate any time but it doesn't suit for my son to go over to theirs any afternoon after school, so I wonder if I could ask her to maybe babysit some evening for a couple of hours instead? It would be for literally 2 hours...would this be reasonable?