Sentence:  I realized , <WSD>now</WSD> , that she had been showing me , in what impressed me as being a very accurate way , something her mother had once said to her ; it was as if she was showing me one of the reasons why she hated that woman inside her . 
Meaning of the word marked with <WSD> tags:  in the historical present; at this point in the narration of a series of past events