Sentence:  Then we relapsed into a discomfited silence, and wished we were anywhere else. But Miss Thorn relieved the situation by laughing aloud, and with such a hearty enjoyment that instead of getting angry and more <WSD>mortified</WSD> we began to laugh ourselves, and instantly felt better. 
Meaning of the word marked with <WSD> tags:  To embarrass, to humiliate. To injure one's dignity. (from 17th c.)