>>102083821She's taking advantage of the guys who have a crush on her, by making them do something for her using her flirting and sweet-talking, only to dump them in disgusted and mocking manner once their usefulness has run out.
I'm sure the writers tried to portray it in a humorous manner but it comes off as very unsettling. Though she does suffer a bit of karmic retribution when she goes ga-ga over some guy and he coldly brushes her off.