I'm flipping through the Star Wars TFA Visual Dictionary, and there is a reference to the helmet that Rey wears in the early part of the movie.
Turns out, this is the helmet of the Tierfon Yellow Aces (as described in the Visual Dictionary). Specifically, the helmet was owned by Captain Dosmit Reah.
Tierfon base, if you will remember, is the base made up by WEG to put a small, sample Rebel base in the hands of the players. This first appeared in WEG's The Star Wars Sourcebook.
And, evidently, the symbol for the Tierfon Yellow Aces, the Rebel squadron stationed at Tierfon, showed up in Rogue One!
More WEG D6 Star Wars becomes canon!
Now, I'm starting to wonder if "Rey" is her real name.
The helmet is that of Captain Dosmit Raeh, a female X-Wing pilot of the Tierfon Yellow Aces.
Evidently, Rey also made a doll of the Captain...
And, Captain Raeh became a role model for Rey, helping her survive in the wastes of Jakku. This is supposed to be explored in the Youn Adult book, Rey's Survival Guide.
Aren't the names "Rey" and "Raeh" a little too close in pronunciation--and, obviously, it looks to be deliberate these names being so similar.
A clue to Rey's heritage?