What changes does pip notice in biddy in chapter 17? What secret does he tell her? What is her reaction?

Pip notices that Biddy is turning into a woman, not very pretty, but very bright and wise. They go for a walk and Pip confesses his desire to be a gentleman. He also admits that he wants to be a gentleman so that he will be acceptable, and perhaps loved, by Estella. Biddy wisely suggests that becoming a gentleman to "gain over" a woman who thinks him coarse and common does not sound very logical.

Source(s): http://www.gradesaver.com/great-expectations/study-guide/section2/