Violet was always abrasive, from the time she was a pre-teen. But a combination of watching her family struggle financially, being in a dirt-poor neighborhood, and being in a survival-of-the-fittest school system slowly turned her into one of the bitchiest, most insulting and sarcastic people around.
Even now, while a good person at heart, she can't help but be utterly vile to pretty much everyone. She struggles to completely let anyone into her heart, even her bandmates in Bad Reputation.