At certain moments in life, certain phrases from everyday life could not apply in such a perfect way and this was precisely one of those moments. While the aura of melancholy emanated by Katya became almost corporeal, the whistle of pressurized steam was followed by the beautiful song of a swallow from Estela who could only emit certain sounds due to the acoustic resonance given in the minerals within her.
Saved by the bell or the kettle in this case, both Desmond and Claire breathed a quiet sigh of relief when they saw Katya's mood change faster than turning a page in a book.