Long time geek, fangirl, mother, and reader. I've got a lot to say, you might not like it all, but it will be honest and hopefully helpful.
"Research confirms that parents and teachers discourage the emergence of physical and direct aggression in girls early on while the skirmishing of boys is either encouraged or shrugged off. In one example, a 1999 University of Michigan study found that girls were told to be quiet, speak softly, or use a 'nicer' voice about three times more often than boys, even though the boys were louder."
Welcome to girls first introduction to sexist double standards. *cue my scream of rage*