Here is my thoughts, IF there was a crime scene, LE would not say there was not and they would not let someone drive the car home. Although, in another case, they did just that, which was SO stupid IMO and I feel will bite them in the behind. Anyway. But, I really don't get the vibe that there was a crime scene, as they have cameras and the car was released. So, no crime scene, IMO. Then go to with what the dogs found. I have no doubt the scent is hers. These dogs are very knowledgable. IF she left in EA's car, I believe she was conscience and alive and in the front seat. I say this because, they took the front passanger seatbelt and mats. Based on no crime scene and the time he took to get to toll, IF she went in his car, I believe she did go in conscience.
IF they had him on film or anyone on film and her unconscience in the trunk or back seat, that person would be arrest for the least kidnapping. Personally, I dont believe there are cameras showing her getting in to the car for a couple reasons. One, they state we believe she got in his car. Two, if they knew she went in the car because very thing is on film, there is no reason to bring the dogs to the garage.
Oh, and I don't think this has anything to do with the sext trade. Jealousy is the root of evil as my mom would say.