Poor Catherine suffers such agonies, knowing she has wronged the Tilneys by not being home for their walking date, and she is so anxious to set things right, that her apologies just tumble out.

"But indeed I did not wish you a pleasant walk; I never thought of such a thing; but I begged Mr. Thorpe so earnestly to stop; I called out to him as soon as ever I saw you; now, Mrs. Allen, did not-- Oh! You were not there; but indeed I did; and, if Mr. Thorpe would only have stopped, I would have jumped out and run after you."

Is there a Henry in the world who could be insensible to such a declaration? Henry Tilney at least was not."

And don't you love that last line? Indeed, Henry was not insensible. ;-)

And then the second time she is obliged to apologize because of the Thorpes, she runs after the Tilneys through the streets of Bath, right into the house and bursts into their drawing room with

"Her explanation, defective only in being--from her irritation of nerves and shortness of breath--no explanation at all, was instantly given. "I am come in a great hurry--It was all a mistake--I never promised to go--I told them from the first I could not go.--I ran away in a great hurry to explain it.--I did not care what you thought of me.--I would not stay for the servant."