I'd say she hasn't been bitchy enough. I mean, this is Brenda, whose first line, ever, the establishing-character line, was threatening to kill her friend with a dull pencil. She's bitchy and loyal and angry and violent and brilliant and awesome. That little speech just struck me as way too calm for her. She should be shouting, crying in a not-cute way that makes her nose blotchy and gets tears everywhere, and bringing some serious smackdown. Not just standing there and crying prettily while the robot lady gets into melee range and tries to kill her.