Nice first post OP. I thought it was well put together. No stupidity or ignorance detected. So I'd like to point out that when Dany has her little conversation with Quaithe, she gives Quaithe an instinctive, certain answer to the question of who she is "the blood of the dragon". People ignore that. I think in that sentence lies the key to explain the lemon tree memory inconsistency. No R+L=D, baby-swap, lived inDorne-gate required. Recall this passage from AGOT Dany III Her blood, even before the dragon was hatched, was all over the dragon. She's blood of the dragon. And what is the thing about blood magic we are told time and again? So Dany knows instinctively that she is blood OF the dragon, the dragon has HER blood all over it. Ergo, she was the blood sacrifice. Hold up... you're thinking... Dany isn't dead! The answer is she USED to be. AA should be REborn right? Death is seriously messed up North of the wall... and south... well why couldn't it be too? So the question is, one more what so the dragon can have three heads? There were two things done so far at that point, what's the third thing that Rhaegar needed for that third head of the dragon? The answer is "lives of the blood of the dragon". Egg sacrificed himself at Summerhall. Then Rhaegar was born. Rhaegar lived to fulfill prophesy, then died at the trident. Then Dany was born. So that's two deaths so far and the blood that was all over the dragon was identified by her as her own. Rhaegar named the tower, the tower of joy. For Dany, the house with the red door (also known as - from her ADWD dream - the tall stone house with the red door) was the place she was happiest. When Dany has her fever dream when she runs up to the house with the red door, flings open the door and runs inside. LOOK WHO IS IN DA HOUSE The house with the red door is a past life memory from when she used to be Rhaegar. As Rhaegar, she blood sacrificed her/himself to pay for another dragon life. Now she's back again to hatch dragons and get her reward. I don't know why everyone gets so hung up on Dany being in Dorne. Dany wasn't in Dorne at all Rhaegar was in Dorne a lot. No logistical hoops required. I really think it took specific blood to hatch dragons. Not just any king would do. Something is special about their blood... otherwise wouldn't everyone have figured out how to hatch dragons by now besides a few rare and select Targs? Here's where we sometimes get to an unsettling part for some readers. "she's a guy reincarnated as a girl? really?" is kind of the reaction. (Or do people just like having R+L=D for love of debate??? idk) To those reactions, here's Maester Aemon to drop the mic. edit: for giggles here's a bonus theory - dragon binder worked by killing the blower, but the "kiss" ceremony to bring someone back to life had its origin in Valyria, where they knew that people that died and were incinerated came back, because death was out of whack, so they used that to their advantage and used up a life in order to bind themselves to a dragon in a second life. Sure maybe they lost a bit of who they were along the way, like Dondarrion has, but hey... they got to enslave a dragon. So that was too big a perk to resist. Note I say enslave. I don't think GRRM calls the horn dragonBINDER for nothing. GRRM has history of hiding secrets right in the simple play on words... tears of lys = lysa's weapon, and of course Season 6's...
Cracking some pots to make some sweet sweet theory jam! Yum!