Two men were coming out by the corridor, and she had not time to reach the sentry-box.

With her hands out before her, she went lightly away from the windows to the outer side of the broad terrace, and cowered down by the balustrade as she ran against it, not knowing whether she was in the moonlight or the shade.
She had crossed like a shadow and was crouching there before Mendoza and the King came out.

She knew by their steady tread, that ended at the door, that they had not noticed her; and as the door closed behind them, she ran back to the window again and listened, expecting to hear loud and angry words, for she could not doubt that the King and her father had discovered that Dolores was there, and had come to take her away.
The Princess must have told Mendoza that Dolores had escaped.

But she only heard men's voices speaking in an ordinary tone, and she understood that Dolores was concealed.

Almost at once, and to her dismay, she heard her father's step in the hall, and now she could neither pass the door nor run across the terrace again.