Reporting a crime in progress (kidnapping) to a detective that was asleep is an error. A person in those circumstances would call 9-1-1 for an immediate response.
Neither Trudy nor Gretchen use the cameras on their phones to document the woman being kidnapped and taken into the motel room or being dropped off, which was ideal for photography due to daylight.
The officers responding to the call fail to check the adjoining motel room. Even Gretchen, who had no legal training, made this observation of an adjoining room while she and Trudy were in the car outside the motel.
The suspect at the motel room says police need a warrant to search it. That's partially incorrect as police pursuant to California Penal Code Section 836 may initiate a search or seizure without a warrant if there is a probable cause to believe that a felony has been committed. Additionally, the suspect did verbally consent after he mentioned the warrant, making his objection moot.
Anyone outside of a Lifetime movie heroine would drive away after the gun thugs were out of the car and called the police, as they committed several felony crimes.
Trudy sees Charles on her first NetCar ride, recognizes him, and speaks to him before she gets in. On the second one, she does not see the driver- which she obviously did, and she would have remembered him as the drug only obscured her memory during the sexual assault.
The suspect leaves the motel a little after 4 AM and it is dark. Trudy and Gretchen follow and by the time he drops off the woman it is daylight well after sunrise, with the sun casting shadows. In the Seattle area, the earliest time the sun rises is a little after 5 AM in June.