Seems to be a few drops left...
...always the most precious. The last few drops.
The entire story is summed up in the first two minutes of the movie in the dialogue between Powell and Francis.
& the way he keeps referring to her as "my dear." It's so honest, so intimate, it's excruciating to the heart. I go to pieces at this damn film.
You're in tears from the moment their attention is met. And she goes first. Francis must go first and by God she pulls it off.