Rey has a conversation with Luke and it starts off like what so many people were thinking when they left the theater after seeing The Force Awakens. You’re my daughter! What? And their relationship goes downhill from there. Jenny Nicholson does the dialogue and is pretty convincing in both parts.
So all in all, it makes no sense that Luke would abandon his own child. But GreenLeadr has a better theory. Or maybe she’s no relation whatsoever. We won’t know for sure until December of 2017. -via reddit