I'm also having this problem. I thought maybe the cheat mod was causing it, but the issue appears in a fresh installation as well. I guess it's either an inconsistency in the save file or a problem in the game itself.
It may be that you have to do things in the morning to give you more options here (per
jediwithbat upthread) but if that's the case, there should at least be a way to exit the scene cleanly. There is nothing onscreen at all. The only option is to hit ESC to exit to the main menu.
If anyone has a working save from this point (Diane in Restrained Mother AT, passed out event at 1700) I could compare it to mine in case there's an easy fix in editing the save file.
If this scene isn't pivotal we could always just avoid it and continue trying to move her to the next AT, though I'd rather figure out the problem.