This is a young woman who tries to provoke.
English has so many more words than other languages, but the French are so good at combining the words they do have. There's l'esprit d'escalier, the spirit of the staircase, which makes me think of a ghost hiding in the banister, but it means the words that you should have said that don't come to you until you're leaving, walking down the staircase.
This should not be confused with Geisterfahrer (Austrian German): one travelling the wrong way up an autobahn (literally, ghost driver).
We are all traveling the wrong way and not being as clever as we would like to be, the words arriving late if at all. Who is the saint of lost words, who will put them back into our mouths and brains when they fall instead to our feet? No one. Or никто, as they say in the Russian.