Complex sentence: Jenny and Rufus argue over her quitting Eleanor's and Jenny moves out of the Humphrey's apartment and moves in with Agnes, who suggests that they plan a guerrilla fashion show at the charity gala honoring Lily and Bart.
Split into simpler sentences: Jenny and Rufus argue over her quitting Eleanor's and Jenny moves out of the Humphrey's apartment and in with Agnes. Agnes suggests they plan a guerrilla fashion show at the charity gala honoring Lily and Bart.