If being "not like other girls" is a description used to curry favor from men then it's pathetic bullshit. But if it's just being different--from both boys and girls--then I suppose it's neurodivergent? The problem is classifying "girls" as a monolith. We don't all like unicorns. Society tries to train us to like them (and other fantasies like true love), and some fall prey to that training, just as some boys fall prey to training in toxic masculinity that teaches them to harden their hearts, become unlovable, and disrespect other living beings.