Original Commentary

Emily, who hasn't shown up in a while, was Kimberly's friend in high school. They hadn't seen each other for a few years because Emily went to college and Kimberly couldn't. Then Emily showed up again, acting as if they were still fast friends. She doesn't like Brisbane much, for a variety of reasons. She's generally cheerful and mean-spirited - Terrence

Modern Commentary
It's funny how Kimberly's best friend (who isn't really her friend) and Kimberly's worst enemy (who isn't really her enemy) ended up spending so much time together. - Terrence