The more I watched, the more I thought the girl might be on the autistic spectrum. She was old enough to know social conventions like not dancing through people’s conversations and not pointing to articles in a stranger’s newspaper; like not pushing her mother into someone’s lap and then laughing loudly about it. Her behaviour didn’t seem deliberately offensive.
The more the girl was annoying (which she undoubtedly was) the angrier her mother became. She spoke to her loudly and rudely (yet not at all firmly) and grabbed at her arms. She shouted a lot but she didn’t insist on anything. The daughter was in absolute control and the mother ended up looking like the unreasonable one.
In the end, I couldn’t decide whether it was mother or daughter that was more irritating. Which irritated me.