Trixie has been down on her luck ever since she used the Alicorn Amulet. Considered by many as a laughing stock and a monster, her career as a showmare has been ruined, making her became poor and depressed. But through some unfortunate events, she ended up back in Ponyville where she's forced to stay with her self-proclaimed sworn enemy; Twilight Sparkle.
Twilight is actually happy to have her living with her. Then why does Trixie hate her? And why is she blaming Twilight for her misfortunes?