Stella tried to remember where she had exited the freeway, but she hadn't really been paying attention to where she was going in the first place.
She remembered that the truck behind her took the same exit, but she realized too late that he was coming up too fast. She tried to swerve to the shoulder to get out of the way, but the truck smashed in to rear bumper on the driver's side, sending her off the shoulder and down a short embankment. She remembered hitting the first tree almost head in. It's a wonder she wasn't killed instantly. She must have lost conscious because she didn't know what else happened. From what she could see, she after she hit the first tree, she must have bounced off and hit a second or third tree. Who knows how many but the last tree she hit was right outside the driver's window. She was thankful that her car had lost momentum by the time he hit this tree or the damage to her car, and her body, would have been much worse.
She couldn't see the road. She thought she could hear traffic sounds but they sounded far off. Since she had been there most of the night and most of the day with no rescue, she deduced that: (1) the asshole that hit her kept going and didn't call 911; (2) no one else saw the accident; and (3) no one could see her mangle car from the street.
She was trapped in her car, likely bleeding internally, with a serious concussion. And no one was coming.