Well, I've taken a dive into the game a bit and I can definitely say that her file is still in the game.
Only that her name isn't in the list of girls you can load in the latest versions.
I've been trying to get her to load.... The first way I tried involving a small bit of editing to the
obfuscated C# assembly. The Lua part in particular. I was making it so you could edit the list of
names the game loads the girls from via the commands.cfg file. But... There's a big issue there.
The girl loading code is called in the Game's main "Awake" function, which is called whenever the
scene reloads. And that presents a big conflict. Because I did in fact manage to add 2B to the list
and got the scene to reload with her as the next girl to be loaded... The problem is that the list
is reloaded as well, meaning that all the effort of putting her into the list was for naught.
My only other coding based options would be to try and add a bit of code to the Game Awake function,
but I can't because the obfuscation has corrupted so many parts of it that I can't compile the Awake function at all.
Or recode the parts of the Awake function relating to loading the girls elsewhere. And I did start trying that as well.
And I did manage to load her sort of, but the code error's out, because go figure, it ain't easy trying to reverse engineer
obfuscated code. Part of the issue being that I'm utilizing the Lua system for this and the Lua code is called half way through
the Girl loading process, so I have to figure out how to undo the parts that were already loaded and then redo them myself
with 2B's prefab.
TL;DR I tried inserting 2B's name into the list of girls to load using code, and I managed to do so, but the list I modified is reset every time the game loads a girl so it was pointless :/. I've also tried reconstructing the Girl loading code myself, and I have had some success, but there is a lot for me to figure out if I'm going to be able to get it working properly. This is what I've got from that. 2B in a T-Pose, and no control over the game what-so-ever, so we can only see her hand.
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The only other option I can think of is to see if we can find the list of names in the game's asset files and edit 2B's name into it there.