I love this particular interchange with Catherine and Miss Tilney which shows how much she is a contrast with flattering Isabella:

“When Henry had the pleasure of seeing you before, he was in Bath but for a couple of days. He came only to engage lodgings for us.”
“That never occurred to me; and of course, not seeing him anywhere, I thought he must be gone. Was not the young lady he danced with on Monday a Miss Smith?”
“Yes, an acquaintance of Mrs. Hughes.”
“I dare say she was very glad to dance. Do you think her pretty?”
“Not very.”