First of all, I'm guessing you didn't know BioShock through the game, but just from watching the movie, right? Otherwise, you would never have failed to recognize the beautiful policewoman as Jill Valentine (Jill.Valentine), the popular heroine of the game BioShock 3. Valentine. Secondly, she didn't die (you should know this if you watched 2 seriously, if you don't know this, watch the end of 2 again; and you said, as a popular protagonist, the game didn't let her die, the movie dared to let her die), and she didn't show up in 3 because there was no more scenes for her. Finally, I would like to express my personal opinion on this issue. jill is a character in the game, and her cameo in movie 2 not only subverts her classic storyline, but also makes her look silly compared to the game, which makes the majority of gamers very unhappy (if you just know the biochemistry through the movie, it doesn't matter, because you don't know where she came from at all), and according to this, I think that the reason is that the producer, if he continues to change the jill's scene, he can't do it, and the game doesn't have her. According to this, I think the reason is that if the producers continue to change jill's scene, he's not going to be able to do it, and the fans of the game are not going to be happy, so it's not coming out in movie 3. Incidentally, movie 3 also had other classic game protagonists (such as Chris, etc.) show up, but none of them had any significant roles, and they just appeared in order to tie in with the game a bit.

As for Alice, she's a newly created character in the context of BioShock, and has nothing to do with the game at all, so the plot can be whatever it wants to be, whereas a character like Jill can't take the plot too far, see?

By the way, the 3rd floor is talking about the game's plot, which has nothing to do with the movie