I am prepared to be told I maybe unreasonable as I understand that just because people do things a different way to me it doesn't make them wrong.
SIL has a 8 month old baby. I've seen her at least once a month since she's been born. SIL and my brother haven't had any baby free time together since baby was born as up until now she hasn't really wanted to leave her. Her parents are elderly and she has no siblings so for family babysitters there's only really me and my Mum they could ask.
SIL wants to see a particular film that's coming out so I offered to baby sit while her and my brother to and see the film and have a meal out. She accepted on the condition that she first observe me changing baby's nappy and giving her a bottle to just make sure I do it it the same as her.
For context I have 3 children one of whom is still in nappies.
Now I'm not against this as such but is it a bit much? I feel weird like I'm being marked on my baby skills or something!