And so her heart had grown bitter against him.

You may ask why her knowledge of the world had not led her to suspect blacker wrong; for a man does not pay blackmail because he has led a romantic girl into a wrong notion of the extent of his affection.

My only answer is that Betty was Betty, clean-hearted and clean-souled like the young Artemis she resembled.
And now she proclaimed that he had expiated his offence.

She proclaimed her renewed and passionate interest in the man.

I saw that deep down in her heart she had always loved him.
After telling me about Phyllis, she returned to the point where she had broken off.