Take this morning for example. She drew all over her little brother's face with blue pen. Not the end of the world, but she should know better (she's almost 6). So I calmly took the pens away and said she could have them back later. Immediately she's screaming and saying she's not getting dressed, she's not going to school, she won't behave unless I give her back her pens. Winds me up until I'm screaming too. this is a regular occurence and I'm at my wits end. Anyone with any advice or insight?