Which sentence is written correctly?

(becky the girl who claimed she couldn't skate very well) entered the ice dancing

competition and won!
becky (the girl who claimed she couldn't skate very well entered the ice dancing
competition and won!

o becky, the girl who claimed she couldn't skate very well; entered the ice dancing competition and won!

o becky: the girl who claimed she couldn't skate very well: entered the ice dancing competition and won!