Sentence:  The humor of my proposition appealed more strongly to Miss Trevor than I had looked for, and from that time forward she became her old self again;nb.... Now she had come to look upon the matter in its true proportions, and her anticipation of a possible chance of <WSD>teaching</WSD> him a lesson was a pleasure to behold. 
Meaning of the word marked with <WSD> tags:  To cause to learn or understand.