Wow, You may be correct! I think our biases come out in situations like this. It is really sad that you were even called a girl? I am wondering if the person was male if he minds being called a boy?
I have found that most of the people I truly admire and have learned the most from are intellectual females. In intellectual forums with women there is not the competition and proving who is right. They are intellectual discussions with true expression without judjment and competition.,