Klaus shows no reaction to the news about Lauren; she had to have fed from someone in that bloody park.

"Whatever you want to do's fine by me, love," he answers, not quite the question she's asked, but the only question he's in any position to answer. "If you want to learn, I'll teach you."

She simply had to tell him what she wanted. This would be her decision, either way. But what was okay for him was not always okay for her, and he would not answer her question without making sure she understood that distinction.