"Was I whistling?" said Shirley. "I forgot. I beg your pardon, ma'am. I had resolved to take care not to whistle before you."
"But, Miss Keeldar, where did you learn to whistle? You must have got the habit since you came down into Yorkshire. I never knew you guilty of it before."
"Oh! I learned to whistle a long while ago."

"Was I whistling?" said Shirley. "I beg your pardon, ma'am. I had resolved not to whistle in your company. 