2 years was the time it took to finally give up. after the nogitsune, Stiles disappeared, but no one gave up searching. Finally after 2 years, they gave up, and he was legally dead. Scott continued on with his all the while suffering from mild depression. Mr. stilinski got into drinking and took a leave of absense as the sherrif until Lydia stood up, and yelled at him and he too continued on. the only who couldn't quite live on, was Malia. after all stiles was her whole world. a year passed on and everyone moved on, but all of them were still hoping for him to come back. Melissa McCall and Sheriff Stilinski got married, and Sheriff Stilinski wqs sort of okay. it had been 3 years when finally they got a call from the FBI.