Just have her act like one of those bumpkins in a bar or something where the message she is trying to say is lost in the volumes of curses.

"Well bleepity bleep bleep bleepin bleeper bleep-bleep! This bleep bleeping bleep totally bleep bleep bleep bleepin bleep could you? I mean bleep, bleep bleep bleepin bleep bleep-bleeper bleepin bleeping bleeper, Benji!"

Everybody is like "Were you actually meaning to SAY something, because we knew you were mad just from the look on your face."