Well, that kind of thing is definitely going to give you a headache, even if you're a Master of Gol. I rather suspect mistree T'pon now has a bit more respect for other intelligent races as well as a bit more humility about her own abilities. At such time as they return to Earth, I wonder if Fawkes will be able to take them to meet the descendants of the Goblins?
I do hope that dream of Hui's at the end is merely a result of stress and not a prohetic dream, that does not sound good. I rather suspect that Harry is going to have a challenge taking out a weakened Voldemort, even after destroying all of the horcurxes. I don't know if it'll be then or later, but I see Harry eventually going back in time and I do rather hope he's able to bring hui with him (the fight that destroys Tom might well send them both back). Now, what, if anything, he does to change the future upon his return would be quite fascinating (I wonder if his return without the embedded horcrux would change things for Tom?).
Author's response
Unfortunatly, Fawkes wont be able to take the Potters to meet the goblins. Eventually, I'll be rewriting this and fleshing it out quite a bit more to clarify and explain why, but all I'll say is that it's not that Fawkes doesn't want to take them to the Goblins, but he can't. My personal view is that the Gringott's branches are the "public" view of the goblin nation for the magical world to interact with. once you board a cart to go to the vaults, your transported (very seamlessly) to the location of the vaults. Where those Vaults are, isn't under London or any other city, but someplace else. right now the else is up in the air, but it sure isn't under England.
As for Hui's dreams, Just remember who the good doctor/healer is related to. Stress is a trigger, but it's going to be a few chapters before everything is revealed.