Hi my daughter is 3.5 she is seriously getting some attitude and testing me to the limits. If I ask her to do something she just point blank refuses, she hits her little sister and laughs about it even if it makes her cry, practically running into walls and very hyper. I don't know what to do with her. It could be tiredness because she is waking at stupid times in the morning like 4.45am but nothin i do will get her to stay in bed. I've tried a gro clock, rewarding good behaviour with stickers and a cookie after so many, taking away her treats/films if she misbehaves. Please tell me she will grow of it? I try to stay calm but sometimes she's so bad I just lose it which then sends her into a tantrum. Is this an age thing do you think?