Read it through once

“No. That was another thing. It stood before my disturbed sense of sight, but it never moved. The phantom that my mind pursued, was another and more real child. Of her outward appearance I know no more than that she was like her mother. The other had that likeness too--as you have--but was not the same. Can you follow me, Lucie? Hardly, I think? I doubt you must have been a solitary prisoner to understand these perplexed distinctions.”