I so agree with you. What struck me from the below link. I truly hope and believe they must have more.
http://ftpcontent.worldnow.com/kion/statement_of_fact.pdf
Clothing:
Forensic Examination of the clothing revealed the presence of DNA foreign to Sierra. The profile of the foreign DNA was entered into CODIS, which is an FBI database that stores DNA profiles. .... a search of the database identified a STRONG association between the foreign DNA from Sierra's clothing and DNA profile of Antolin Garcia Torres.
Car:
Garcia-Torres lived about 7 miles from Sierra's home and drove a 1998 VW Jetta. On 4/7/2012, investigators seized the Jetta and submitted it to the crime laboratory for analysis. Criminalists located DNA foreign to Antolin Garcia Torres within the car and found a STRONG association between that foreign DNA and DNA profile of Sierra LaMar.
All of her known personal belongings, including her asthma inhaler, her money her house keys and the clothing SHE WAS WEARING THE MORNING OF HER DISAPPEARANCE, have been located.