Complex sentence: She flies into a psychotic rage when Cliff announces he has decided to stay, thanks in part to Frasier, ready to attack Cliff with one of his gifts: a spear gun, but security drags her out.
Split into simpler sentences: She flies into a psychotic rage when Cliff announces he has decided to stay, thanks in part to Frasier. She is ready to attack Cliff with one of his gifts, a spear gun, but security drags her out.