Apparently she was also datamined her tent in still in the game.
She is the Tiefling from BG: Descent into Avernus, the BG Infernal Tides comic book, and a D&D flavoured Clue game (she is on the box cover).
She's an Archmage with a facination with puzzleboxes, but I still think either Alfira or Delina are more likely (I think Helia is ancient history along with "thekid"/"JaccDevir", "Redwizard" origins).
Being an Origin means she would have been part of the trip in Avernus aboard the nautiloid. It would make very little sense since she is supposed to reside safely in a library in Candlekeep...
