Read it through once

“Oh yes, papa. I have no fears at all for myself; and I should have no scruples of staying as late as Mrs. Weston, but on your account. I am only afraid of your sitting up for me. I am not afraid of your not being exceedingly comfortable with Mrs. Goddard. She loves piquet, you know; but when she is gone home, I am afraid you will be sitting up by yourself, instead of going to bed at your usual time—and the idea of that would entirely destroy my comfort. You must promise me not to sit up.”