The following contains spoilers for Star Wars: Battlefront 2, and possible The Last Jedi.
The newest Star Wars video game is making headlines for many unfortunate reasons, but inside the game itself might be the answer to a question fans have been asking for almost two years. Star Wars Battlefront 2 has a single player story which follows Imperial soldier Iden Versio during events that take place between The Return of the Jedi and The Force Awakens. By the end of the story's campaign fans have to wonder if the character they've been following might be Rey's mother.
Over the course of Star Wars Battlefront 2 Iden Versio and her fellow squadmate Del Meeko defect from the Empire to the Rebellion, however, they also fall in love, and have a daughter. The fate of Iden Versio and the daughter is left ambiguous in the game, but as the game has a parent with an ambiguous daughter, and Star Wars: The Force Awakens gives us a young girl with ambiguous parents, it's simple enough for some to draw a line between the two, as Screen Rant has done.
Is it possible that Iden Versio is Rey's mother? Sure. There's nothing within the game or The Force Awakens which would seem to explicitly discount the possibility. However, that being said, there's also no real evidence that this is true either. The fact that we know nothing of Rey's parentage opens up numerous possibilities of which this could be one. Neither Iden Versio nor Del Meeko show any particular skill with the Force throughout the game, and it would seem unlikely that two non-Force users would give birth to somebody as powerful as we know Rey to be. What's much more likely is that the game's developers left this plot thread loose specifically to create such speculation.
While the events of the Star Wars Battlefront 2 single player game are supposed to be official canon, it seems like an odd place for this detail to be revealed. Even if the identity of Rey's parents isn't officially confirmed until Star Wars: The Last Jedi is released, if it turns out that her parents are two people that only a fraction of the audience is familiar with, the moment isn't going to have the same weight it otherwise could, and many fans will probably be frustrated that they'd have to play a game to get the whole story.
It will also be unfortunate considering what a low opinion many currently have of Star Wars Battlefront 2, making the game something of a pariah. The game's use of random loot boxes is being called gambling by some, leading at least one U.S. state, and multiple countries, to investigate the practice, and this game specifically, for potentially promoting gambling to children.
There is some additional single-player content expected as downloadable content for Star Wars Battlefront 2. Perhaps when that arrives we'll get this question answered.