Okay I'm putting this out there because I have a sneaking suspicion Yoko Taro is gonna pull the rug from underneath us. And there are a couple things that are a little suspicious.
- For starters we know that most if not all YoHRa model android are blindfolded on the field that makes it convenient for hiding the tell of the Logic Virus, 9S' blindfold fell off after the end of the raid revealing that he wasn't infected. 2P OTOH never shown her eyes. Of course this still has some holes in it from what I gathered from the Logic Virus and hazy memories.
- On that note there is also the matter of 2P's color scheme, a direct inversion of both 2B and 9S's palettes. Which also coincides on an expansion where the forces of evil is corrupted light, on a setting where said light devastated the star, even without that backdrop one must wonder, why use those colors instead of the original 2B?
- I'd also mention Konogg's opinions onher as untrustworthy, apart form setting up future conflict between the twins, why bring up the idea that she can't be trusted at all? Well there the possibility of it begin a red herring of sorts, but still.
I'd speculate thet she might be infected with the Logic virus, but that seems too derivative from the base game (where that did happen and was the reason 9S killed her). Her being a sin eater is also possible but coloring aside she doesn't exhibit any of the usual traits and while there are stuff like sin eater golems, sin eater machina are still kinda unprecedented. I could also theoririze that 2P came forma different from from 9S, which woudn't be that farfetched since the multiverse was canonized, but that still begs the question on how they wound up in the same space, and how they were on a shard of Hydaelyn. Regardless, 2P does seem shady.