I'd also like to know where she was from lunch till 7:45pm. The phone call we see on video might not be relevant at all. I think the subsequent calls were more indicative that something was wrong, especially the 3 minute call for help to a friend who was out of town. The police perhaps have all the answers to these questons and apparently they aren't enough to find her or to make an arrest. I think it's possible that none of that information could predict what would happen next. IMO the police would only share info with the public if they thought that could help the case. They don't care about our curiosity and don't want to let the perp know what they know.