Several days earlier, Esme had seen Jacob briefly as he passed through Forks. As she'd been far too busy cleaning up after the bonfire to investigate, she simply ignored it and assumed that he knew what he was doing. Youngsters these days were far too hard to keep up with. She was sure it'd all turn out fine.
However, certain events—or rather, one particular event—occurred and made it impossible for her not to realise that something was going on.
"Carlisle," said Esme.
"Yes, Esme?" said Carlisle.
"I've just realised that something's going on."
Carlisle looked up from his newspaper. "In what way?"
"Well, for one thing, Jacob followed Sulpicia's tracks did four days ago. And I've just seen Jane and Edward on the same trail."
"I'm sure it's nothing."
Esme snorted. "In that case, I'd like to know what you'd call SOMETHING!"
"Fine, fine!" Carlisle threw down his newspaper as two more blurs went past. "We'll go! Stop nagging me, woman!"