[JLS]

She may have fallen out of the car on her arrival at the lax house, or her BF/pimp/driver - whomever it was - pushed her out

Remember in her "driver;s" statement from earlier in the day he says that she made him stop the car and got out and started walking away. Now you and I know it did not happen exactly that way. We know that either they got mad at each other or one got mad at the other. We know that one or the other stopped the car or demanded the car be stopped. Then she got or even jumped out or was thrown out of the car. So she blurred that detail into or even on purpose added that detail to one of various stories that night.

[Jezebelle]

Exactly. Weak, dependent people like Mangum who can't or won't take responsibility for their screw-ups have an immature habit of blending one event with another. Teenagers are famous for doing this.

When bi-polar people are in the manic cycle, they commit a lot of dramatic acts, big gestures, and so forth, and self-injury and accidents are a common result because they aren't at all mindful of what they're doing.