If I'm not mistaken, the trailer has been found. In the photos of the trailer on the facebook page, there is evidence tape on the handle and door and the building behind it appears to be the Siloam Springs police department building. Maybe when they are asking if anyone saw the trailer at any point, they are trying to pin down her movements. From what I understand the pictured trailer is the trailer that they mentioned she was staying in for a period of time before Veteran's Day at Natural Falls State Park (located approximately 6 miles west of Siloam Springs across the Oklahoma border on 412 West).