The detective in that article also said she was going to see a boyfriend where as everything else I have seen says friend or just that she was going there. I wonder if that is accurate or just what he thought.
If you hear about a young woman traveling to a prison you make assumptions. Seeing a boyfriend could be one of them. Even if she told people things they might not have been true depending on her age. If she was a runaway she might have been trying to hide her real identity.