I have just witnessed my MIL and SIL (quite gently -although I'm not sure that that matters) smacking the hand of SIL's DD because she wouldn't leave a glass coaster alone (she is only just one and I just don't think she 1 - understands what no means yet and 2 - doesn't understand why she can't touch some things). Although I am anti-smacking, I do feel it's up to individuals to make their choices about the way they want to discipline their children and so didn't interfere - just watched aghast. However what concerns me (and is the reason for my thread) is that I would be outraged if either of them did that to my DD. My MIL does look after her sometimes and while I know I don't have all the answers about how to discipline children I don't really feel confident enough to be able to tell MIL not to use any physical punishment (I think her reaction would be "I've brought up two children and they've turned out alright and I smacked them etc etc). Whereas before I felt completely comfortable leaving DD with MIL now I feel very uncomfortable. Does any one have any good suggestions of how to deal with this? I should add that my DD is 8 months old and so hasn't done anything that has required any kind of punishment (yet!).