Hey everyone I have girl/boy twins and their 17months my little girl is a lot more forward than her brother and has started smacking him for no reason I've been trying to deal with it by my usual way of counting to 3 for her to stop or warning of a time out .. But it's getting out of hand, today she threw something at his head for no reason .. She had tendencies to smack myself and her dad as well. I just need some advice of how to deal with this before it gets worse 