Is there the the option to return to the previous choices, or does that path continue untill you run out of question and then lock up still?
Good evening!
Presently, the choice is meant to allow the player to choose between A (i.e. "ask if she's nervous) or B (i.e. "tell her you're ready to begin"). If B, then proceed to the rest of the game; if A, present a series of sub-options providing backstory; then, when all sub-options are exhausted (or at the player's whim), proceed to B (and, thereby, the rest of the game).
Once you pass option B, there is, at time of writing, no going back without starting a new playthrough. If the game locks up for you at any point hitherto described, please let me know and I will do my best to solve the issue. At this point in the story, you are, at all times, supposed to be able to proceed. I don't want you, or anyone else, to be unable to play :)
Have a good one!
-Lars