Cheryl parked on a street used when the P&R spaces are filled and by people who avoid the traffic bottlenecks at the P&R. She parked her car around 7 am. A woman who spoke to police said she parked behind Cheryl's car at 8 am. Was that space available for an hour during the morning rush or had someone else been parked there and left before 8?
Toxicology testing looks for common substances. It's not feasible to test for everything. When they finally went after Charles Cullen, the nurse who admitted to 30-40 murders, the tox screen on the first victim autopsied missed his drug of choice, digoxin. It and many other drugs cause unconsciousness or even cooperative sedation.
I updated my partners on all we now know, laying the info out chronologically. The first response was, "Who has it out for the local PD?" They think it was a crime of opportunity, that it only takes a few seconds to grab someone from behind in a bear hug and plop them into the back of a van or work truck. With two people involved, one to drive, one to subdue, abduction could happen very quickly and without notice. Cheryl could've been called over to the vehicle or walked by, perhaps slowly as she sent the text.