Ashara Dayne, she was an intimate of Elia, Rhaegar, Ned and maybe Lyanna. We're told she threw herself off a cliff, but it has been speculated that she is alive and following Danaerys as the shadowbinder Quaithe.
be a twist worthy of any daytime soap.
I like Quaithe as an enigma, honestly. I have this feeling she'll lose that potency if pinned down - especially if pinned down as a Weterosi.
That said, I personally think Quaithe's real asset to the Daenerys story has nothing to do with Jon and everything to do with dragons
, which were supposedly originally from Asshai. Well, that and/or Azor Ahai, which is an Asshai'i legend.