Read it through once

Mrs Durbeyfield, having quickly walked hitherward after parting from Tess, opened the front door, crossed the downstairs room, which was in deep gloom, and then unfastened the stair-door like one whose fingers knew the tricks of the latches well. Her ascent of the crooked staircase was a slower process, and her face, as it rose into the light above the last stair, encountered the gaze of all the party assembled in the bedroom.