Which sentence in this excerpt from Frances Hodgson Burnett’s A Little Princess shows indirect characterization?

( 1. It was just then that Miss Minchin entered the room.) She was very like her house, Sara felt: tall and dull, and respectable and ugly. ( 2. She had large, cold, fishy eyes, and a large, cold, fishy smile.) It spread itself into a very large smile when she saw Sara and Captain Crewe. ( 3. She had heard a great many desirable things of the young soldier from the lady who had recommended her school to him.) Among other things, she had heard that he was a rich father who was willing to spend a great deal of money on his little daughter. "It will be a great privilege to have charge of such a beautiful and promising child, Captain Crewe," she said, taking Sara's hand and stroking it. "Lady Meredith has told me of her unusual cleverness. ( 4. A clever child is a great treasure in an establishment like mine.")