"She got all pouty and upset by the Belgian CETA..."  and it worked, didn't it?

"...she got in a snit..." Yes, she was upset, alright, at members of her own family first and foremost. She was kept in the dark about it, and given that situation, did her best to get "ahead of it."  She did such a good job in this instance, that potential controversy was snuffed out very quickly.