When Heather is driving Vanessa home the first time her hair goes from being pulled back when they leave to loose in the car back to pulled back when Vanessa gets out.
Heather and Vanessa see a photo image of "Vanessa's" Idaho driver license. While some professionals such as private investigators do have access to driver files, they do not have access to photo images such as the one shown due to the federal Driver Privacy Protection Act. The information given them would be limited to the driver's name, personal info, and driving history.
While Heather is sleeping and Vanessa enters, the deadbolt is heard being unlocked but the lever for it does not move.