Melissa's parents and twin sister tried to follow her, but eventually lost track of her SUV and called local police to intervene before she hurt herself.
However, when the officers finally arrived, instead of calming her down, they shot her to death when she aggressively exited the vehicle.
The family is now seeking legal action for their daughter's murder. Attorney Julian McPhillips released a statement on Tuesday, saying:
"She's only 5'4" and 130 lbs., and she had a pocket knife and was going to maybe cut her wrists and she was suicidal. All these cars were chasing her on the interstate only because the parents had alerted them that she was maybe dangerous to herself and rather than helping her, they put a bullet in her."