dd1 behaviour is out of control lately. she has seriosuly hurt dd2 several times over the last few weeks, she is cheeky, disobidiant and worryingly very violent. i witnessed her i nthe garden today pushing dd2 over (very easy to do as dd2 balence isnt very good still) kicking her in the back and stomache and as i got to the gardem also in the head. she refused to go to her room for time out, i had to drag her i nthere and hold the door shut. the other day she kciekd dd2 off the sofa so hard that dd2 cried (dd2 never cries!!) and bruised dd2 hip. we went down the shops today and she was smacking me 0on the bum and wouldnt behave. she is driving me mad. PIL thinks that dd1 can do no wrong, and tbh she gets away with murder there and dd2 gets the blame for everything. they are not helping the situation.