Read it through once

In the room where the dressing-table stood, and where the wax-candles burnt on the wall, I found Miss Havisham and Estella; Miss Havisham seated on a settee near the fire, and Estella on a cushion at her feet. Estella was knitting, and Miss Havisham was looking on. They both raised their eyes as I went in, and both saw an alteration in me. I derived that, from the look they interchanged.