I'm thinking, if this is cool with people. 
Belle, the curse of the beast actually get's transferred to her instead of her breaking the curse because her and the beast weren't actually "true lovers." The only way to actually break the curse is for her to find her true love. BUT here's my twist, anytime she smells/sees/comes into contact with a rose she enters some sort of feral, beast mode.

Does that work for this or am I doing it totally wrong? haha.