So I was watching Rise of The Guardians for the second time last night, and as it was getting to the scene where Jack recovers his memories, I had an epiphany.
The only Mini-Faerie with the gold feather on her head that becomes Jack’s little companion?
She’s his sister.
Notice the strategically placed beauty mark.
And Jack’s sister?
They did find each other in the end! So for those of you who didn’t know before - now you do.