Aquarius discouraging individuality?

My Aquarius mom is literally telling her young Aquarius son to stop being himself right now. I'm kinda disgusted with her right now because my brother is like the most unique character and he's hilarious and she's telling him to stop, like, why? She's telling him to ''grow up''. What is wrong with this lady? I do find it sorta shocking that my mom is an Aquarius and she's kinda ''bland'' so I'm guessing someone did the same to her when she was younger.