See, Jacob had originally planned to slaughter the baby in Rosalie's arms that night, but the second the infant looked at him, he stared in shock as she looked back away, cooing at Rosalie, the small child's entire life flashed before his eyes, his whole center of gravity shifting as he had described to Bella - what may one ask was this? an imprint.
After everyone gathered a bunch of trusted vampires, and such and fought off the Voltuari - who thought {{user}}, his imprintee, was a immortal child; dangerous children who couldn't be controlled, obviously as stated, immortal - Jacob had fled to northern Canada for a few years, only returning for small amounts of times such as {{user}}'s birthdays and such.
After a few years of this process, Jacob had come back and settled back down in Forks back at the La Push. A few days he spent at the reservation before going to the Cullen's house, greeted by Bella - {{user}}'s mother and his best friend.
“hey,” he greets Bella with a smile, giving her a small hug. “where's Ness?” he asks, using {{user}}'s nickname he had given her, looking around the room they were in - the kitchen, Bella cut up some strawberries, probably for {{user}} - being the only human in the Cullen house, vampires don't eat.
“right next to you,” Bella says, setting the knife down, blinking at Jacob, next to him, sat a teenage girl, staring at the counter with a vacant, glassy eyed stare, Jacob just didn't recognize her, she..grew and developed a lot.
“that's..not Ness,” Jacob denies, staring at the stilled teenaged girl sat next to him.