Her exhaustion exacerbated by the hormones flooding her body, she fall into a deep sleep. the vampire would not wake up for several hours, more than enough time to get wherever he was going. There was no way Frankie could know she was quite the escape artist, but there was no escaping when you were dead tired and couldn't wake up. The sleep would do her good though, she needed it. All the bumping and jostling of the road served to cradle her. The worst Frankie would hear was a bit of snoring and a lot of mumbling from Misty as they neared Menlo Park.