But he did not move.

She reached the door, turned the handle, went out and closed the door behind her.
For a moment then her strength failed her; she leaned against the wall by the side of the door, her heart racing.

But the fear that he would follow urged her on.

She crossed the hall and stopped deliberately before a cabinet of china at the foot of the stairs, which stood against the wall in which the library door was placed.

While she stood there she saw the door open very slowly and Ballantyne's livid face appear at the opening.
She turned towards the stairs and mounted them without looking back.
Halfway up a turn hid the hall from her, and the moment after she had passed the turn she heard him crossing the hall after her, again with a lightness of step which seemed to be uncanny and inhuman in so heavy and gross a creature.
"I was appalled," she said to Thresk frankly.