I am shamelessly posting here for traffic. DD7’s behaviour after school is completely out of hand. She just flips every time she hears a no and I don’t consider myself a strict parent. No problems at school, well behaved, ok student. One after school club so shouldn’t bee too tired. She has a younger sibling who just started going to the same school. But I just don’t get why she can be so mean. For example, I let them watch a movie before dinner and explained that when dinner is ready we will have to pause and carry on with the movie after. DD4 obeyed the rule and came to the kitchen. DD7 completely flipped, didn’t want to come to the table, started kicking and screaming how she hates me etc. It’s almost as if they reversed roles and younger one is more in control of her emotions. No idea what to do. I try to be calm, set clear rules but nothing seems to be working. I also teach that it’s ok to be angry but you can’t hurt other people. Has anyone else been through it? Afterwards, she seems embarrassed and she acknowledges bad behaviour. Next day it usually happens again. I am so bloody fed up. Any advice welcome.