Emma is letting herself be "taken in" by Frank in spite of the fact that she sees he is determined to please everyone. She enjoys toying with the possibility that he is growing fond of her, and she lets this enjoyment blind her first into overlooking some negative manifestations of his character and second into confiding in him too quickly with some of her attitude toward Jane. Only later will the reader know it, but, somewhat like Harriet, Emma is having her feelings misled. One thing about Emma, though, remains constant: her approval of a static social hierarchy (Harriet's unknown situation being a notable exception), indicated in her attitude toward the Coles. When this belief comes in conflict with her natural bent for social entertainment, however, she lets herself be persuaded because others have accepted the Coles, because the invitation is in good taste and properly solicits her as an "honor," and because she can attend out of a partial sense of noblesse oblige. The satire in her "letting herself be persuaded" should be obvious.
