Lucy: It is a very great secret. I've told nobody in the world for fear of discovery.
Fanny: [greedily] I am the soul of discretion.
Lucy: If I dared tell...
Fanny: I can assure you, I'm as silent as the grave.
[Lucy whispers in Fanny's ear; Fanny's kindly disposition changes abruptly]
Fanny: [turning against Lucy, enraged and horrified] Viper in my bosom!