At that point you need to act normally (speak softly, get her a glass of water, help her calm down) rather than heightening the drama by rushing around and generally acting as though you were in a movie.

"Hollywood movie" =/= "movie with genuinely intelligent characters". I'd say, in such dramatic situations aspire to fully "rational" and reality-based reasoning but at the same time keep the "movie" attitude and self-image of a driven, altruistic and determined hero - that's what you (probably) want to want to be, after all.