In The Pirate Fairy movie we see Tinkerbell and her friends going up against Captain James Hook and his crew, right? Well if that’s true than why on earth would Tink work with the same pirate years later? I mean she knows he’s not to be trusted, she knows he would have a grudge against her, and all fairies in general, and she knows that no matter what Hook will only look out for himself. So why would she do that?
Because she was Jealous and she let her emotions get the best of her. Jealous/Anger make you do some crazy things.