My MIL is currently our primary babysitter and I have finally convinced DH we need someone outside the family. One of his nieces is 12 and both her and her mom have asked if she's old enough to babysit DS, who is 19 months. I said no, DH tried to argue that she was until she came over and DS fell off a picnic bench while she was watching him (DH was there, just not with them at the moment). We finally agreed that if DS were older, she might be old enough to babysit. So, I'm just curious how other people feel about this. Would you let a 12 year old watch your LO?