There is no proof they even made it to WY, that was the next stop on their cross country path. She supposedly sent text messages but the mom has insinuated those might have not come from her as they were different. No social media post of them in WY either and from experience there are many photo spots you would be capturing once you would get into Lander, WY on to Teton National Park. I'm sure they have combed over CC/Debit card transactions and Security Camera footage at those stops.