Read carefully.
Washington said, “We have different stories as to what took place at the point of her becoming missing, but in terms of other connections prior to that we don’t have the information.”
“Whenever a crime occurs, or there is a missing person, you do just like you do in any other case, you start talking to witnesses. For those people that were there at Tin Roof, more specifically in this case the people that [Paighton] went there with, you just speak with those people that are present and that can give you insight as to what was going on.”
Does She ever say that PH was at Tin Roof? She says the people she was with said they went to Tin Roof. She doesn't say that story was confirmed, only that it gives insight as to what is going on. So, for instance, if there was absolutely no physical evidence to back up that story, then the "insight" might be something completely different if you understand what I am saying.