Book ONE, Part 1, chapt 4.
{Fanny and the Colonel] “Then why won’t that do,” the Colonel asked, “for you to think it’s what she has come for?”
“How will it do, HOW?”—she went on as without hearing him.
“That’s what one keeps feeling.”
“Why shouldn’t it do beautifully?”
“That anything of the past,” she brooded, “should come back NOW? How will it do, how will it do?”