Just throwing this out there. I saw a earlier article dated 4/18 which shows a volunteer checking a culvert in the town of Evans, Co. I wonder if she was taken there?
Volunteer Gary Jones of Fort Collins ducks down to search a culvert near Denver and 42nd Streets in Evans for Kayleah Wilson Saturday. Other teams set out on ATVs and horses to search areas off of U.S. 34.
http://www.greeleytribune.com/article/20100418/NEWS/100419640
Evans is located at the intersection of two major routes: U.S. 85 and U.S. 34. Seven large cities are within a 60-mile radius: Greeley, Longmont, Loveland, Ft. Collins, Cheyenne, Boulder, & Denver. Evans is within 25 miles of the Rocky Mountains and less than an hour from Denver International Airport.