Claudia Lawrence's father Peter Lawrence says he has spent six years missing her smile and laughter.
Mr Lawrence told a news conference it "is galling" that there are people in the community who know what happened to Claudia, but who aren't coming forward.
He added: "If she has been murdered, as we believe, then I just want to bury her."
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Emergency services, including a hazardous response team, were called to a property on Rainton Street on Friday morning.
The 14-year-old boy was arrested after Cleveland Police Dog Rocky, tracked down his hiding place in a garden half a mile away.
Andrew Deluen, 33, was hit by two cars on Monday morning. A man who he was walking with at the time went on to steal one of the cars.