What came to my mind was that the posters of the game show us a lot of things, like poster of clara, if you look carefully, in it poster, clara has a normal wing instead of Frankenstein's hands, or felix straightens his tie with his HANDS. I think that maybe something unfortunate has happened in this place now... and even friedrich himself who can't walk anymore.

But maybe not in this place.... Thanks to @dianakim who discovered a secret from the game in his last post, a new poster is shown that says Finger Lakes in the center of New York, which maybe this poster shows another branch of this restaurant. And the events took place there.

But it's just a Theory