[ansel12]

She was knocked unconscious and had several bones broken when her truck crashed. She wasn’t firing any weapon no matter how well she was trained.

Once reason her Humvee probably crashed was because Lynch describes herself as in a panic and screaming and cowering and distracting her sergeant in the passenger seat while probably not helping the mood of the female driver who crashed the vehicle.

[Cyber Liberty]

...probably not helping the mood of the female driver who crashed the vehicle.

...and died from her injuries. It would appear Pvt Lynch was not only not adept at firing her weapon, she was all thumbs reading a map because the only reason they were in the wrong place, was they made a wrong turn in the desert.