Questions about a passage.

When Estella constantly makes fun of Pip and teases him in most of his days, why does she become so frustrated when she sees that he is not in love with her? chapt. 8

Why doesn't Joe stand up for himself and Pip, as they are in an abusive home and relationship with Mrs. Gargary? chapt. 3-14

Why does Camilla often not wish to display her feelings with the most closest relatives or friends to her? chapt. 11

Why does Mrs. Havisham explain the seating arrangements to the (Camilla and Pocket family) about feasting upon her at the dinner table? chapt. 11

How come Mrs. Gargary leave Joe and Pip for Mr. Pumblechook so often? chapt. 13

How did Pip find out that Joe smoked (with a pipe) in the old battery by the marshes? chapt. 15