@avatarivn
The idea is that they're not acting 'like women', in that they aren't soft and dainty and only fit for being married off for influence and wealth. By refusing to live life as a bargaining chip, and wanting to do physically-oriented things like adventuring or whatnot, they are an extreme oddity who has lost their social worth.
Thus she's a mad dog. And honestly she didn't get beaten down by the MC, she got beaten down by Lea, and the MC was just a tool involved in doing so.