Lamar says her daughter wakes up at about 6:00 a.m. most days to get ready for school but doesn't leave the house until about 7:15, in plenty of time to walk in daylight to the bus stop. She says police have told her tracking dogs find Sierra' scent ends at the driveway of the family home.
She says many regular commuters have seen Sierra waiting for the bus in the past.
"They're telling me that they've seen her at the bus stop a lot," Lamar said. "They (police) said something about the scent stopping at the driveway. That tells me she did walk to the bus stop
http://www.kron.com/Article.aspx?ArticleID=3472
Why would the mother think she walked to the bus stop after her scent was stopped at the bus stop? I believe she was picked up at the end of the driveway and her phone thrown in that field.I also wonder how she felt about her Mom's boyfriend.