She listened anxiously at the door for the sound of footsteps on the stairs, but all was silent.

Surely, Keyork had not taken him elsewhere, to his lodgings, where he would not be cared for.
That was impossible.

She must have heard the sound of the wheels as the carriage drove away.

She glanced at the windows and saw that the casements were covered with small, thick curtains which would muzzle the sound.

She went to the nearest, thrust the curtain aside, opened the inner and the second glass and looked out.