In that case, if she sent for him--but she would not consider that case.
The position of the window, while it increased the women's safety, debarred them from all knowledge of what was going forward, except that which their ears afforded them.

They had no means of judging whether Tavannes remained in the house or had sallied forth to play his part in the work of murder.

Madame Carlat, indeed, had no desire to know anything.

In that room above stairs, with the door double-locked, lay a hope of safety in the present, and of ultimate deliverance; there she had a respite from terror, as long as she kept the world outside.

To her, therefore, the notion of sending for Tavannes, or communicating with him, came as a thunderbolt.