There is a duo between them.

They exchange the silver keys, which express absolute intimacy, and give mutual freedom of access.

Camillo can now secrete his followers in the castle; Michiella can enter Camilla's blue-room, and ravage her caskets for treasonable correspondence.

Artfully she bids him reflect on what she is forfeiting for him; and so helps him to put aside the thought of that which he also may be imperilling.
Irma's shrill crescendos and octave-leaps, assisted by her peculiar attitudes of strangulation, came out well in this scene.

The murmurs concerning the sour privileges to be granted by a Lazzeruola were inaudible.