Sentence:  Back at the Factory-to-You with the other old maids , back there she was the youngest clerk and she <WSD>was</WSD> thirty-four , which made her young enough to resent the usual ideal working conditions , like the unventilated toilet with the door you had to hold shut while you sat down . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)