He was wrong, and he kicked her too hard. She's crying afterwards and doesn't even know why she's I'm trouble or why he kicked her like that...
I have a 1-year old who started doing that infant handstand out the blue, her mom laughs and sings this "shake your booty" song and my daughter laughs too and turns that into other weird infant dances. I'll say something in a jokingly stern voice like, "we ain't shaking no booties over here, Calliope", and I've nudged her with my foot. She'll either stop or keep going but either way she isn't in real trouble, she's 1 and can't even talk yet, she don't know what the fukk she doing...
It's all cute and fun and I definitely have never KICKED her so hard it drives her head into the floor. He outta pocket for that...
Now, I have 4 and soon-to-be 6 year old daughters, who picked up this "boots shake" thing from somewhere, and it's cute to their mother abd she hypes it on. I'm more stern with them depending on the occasion----->I don't want to strip my girls of innocence they haven't lost yet, there's nothing sexual about the dances until it's made sexual, whether verbally or otherwise. But when they get on a run with it I shut it down, when they in the presence of company other than just Mr I shut it down, and I explained to them we not booty shaking around others...
It's a delicate line, all my daughters are young, and you have to continually evolve as a parent, as a father. This in and of itself isn't a serious offense with a girl my youngest daughter's age, so he was totally wrong in this instance. I'm sure he loves his daughter, though...