Kim was very unlikable in this episode, motivated only by selfishness and lust. She acted, at best, like a pervy stalker. She was contemplating and almost carried out date rape. The fact that the drugs she was going to use to try and drug Sugar nearly killed her brother didn't bother her and she exploited Sugar's sympathy because it meant she would get more physically close to her. While having fully rounded characters is a good thing – and pretty much everyone else gained an extra dimension to their character – it's probably not a good idea to make Kim so unpleasant when we're seeing this story from her point of view.