Back at Hogwarts
Dumbledore sits in his office, staring out the window at the setting sun. It had been 2 years since the students went missing and there was no sign of them anywhere. He had let the owls rest for 2 months over the winter then sent them out again. They came up empty. They had given up hope. Apparently if they are still alive they didn't want found.
He thinks about all the people that this effected. First was Arthur and Molly Weasley. They had already held a funeral service for their 4 missing kids. Mr and Mrs Granger moved away from London. The Browns hired their own detective which was still hunting. Lupin had been the hardest hit. He cared for Harry just like a godfather would. The only people that wasn't effect was the Malfoy's and that is because Draco is the only Malfoy left. His mother and father were killed several months, after the children's disappearance, during a death eater attack. The Gryffindors had all taken the loss greatly.
Dumbledore stands and heads over to one of the small windows and looks out across the calm grounds. The quidditch pitch stands bare. No one wanted to play anymore. Not without their favorite players.
He holds his arm out and lets a midnight black owl land. He strokes the bird, gently. This was going to be his last attempt at finding them. "I want you to find Harry Potter or Ron Weasley." He whispers to it. He then raises his arm and watches as It flies towards the clouds. He then heads back to his desk and sits.
Two months later
The midnight black owl had yet to return. Dumbledore kept watch for it every night but every night it did not return. This time..he gave up hope.