Sentence:  With or without her knowledge, with or without her consent, with or without her effort, she would sail onwards, away from Breaseborough, away from the smoke and the grime and the slag and the <WSD>crozzle</WSD>, away from stifling Dora, away from the hot fevered hours of study, away from the condescension of Gertrude Wadsworth and the rationed contempt of Miss Strachey, away from that snub about Mary Anning and the fossil bones. 
Meaning of the word marked with <WSD> tags:  Hardened slag from a cementation furnace.