She helped send the first one away, and she took the second one herself….
There truly is a suspicious eagerness to her just wanting to take Rumple’s kids from him, which only adds to the Sneaky Fairy Idea! Blue could definetly be up to something!
There is some huge theory running on tumblr, among Rumple Fans.
The theory says that, Black fairy killed Blue long time ago and is pretending to be her all this time. The same theory also says that maybe Black fairy was the one that told Pan about henry , centuries before he was born and that she along with pan, managed to make emma and neal meet to have henry and that were also them that told august who was Neal and made him separate Emma and Neal.
It definitely sounds like a plausible theory. It should also be pointed out that Blue, out of all the people in the entire town, happened to be who Pan’s shadow went after in Storybrooke. If she was really the Black Fairy/Rumple’s mother all this time, it would have given Pan and his shadow a reason to attack her.