"And all the time the income has accumulated at compound interest. My dear, you're going to be a very rich woman."
Katherine Grey nodded.
"Yes," she said, "I am."
She spoke in a detached, impersonal tone, as though she were looking at the situation from outside.
"Well," said the doctor, preparing to depart, "you have all my congratulations." He flicked Mrs. Samuel Harfield's letter with his thumb. "Don't worry about that woman and her odious letter."
"It really isn't an odious letter," said Miss Grey tolerantly. "Under the circumstances, I think it's really quite a natural thing to do."
"I have the gravest suspicions of you sometimes," said the doctor.
"Why?"
"The things that you find perfectly natural."
Katherine Grey laughed.