The Arizona Supreme Court is taking up the case on Tuesday morning.
"I'm, like, really thankful to still be here and stuff considering everything I went through," said Abby Guerra.
Guerra spoke out in April 2011 after she recovered from the car crash that killed her friend, Marlena Cantu.
Because of a hospital mix-up, Guerra's parents believed she had died and Cantu had survived.
It turned out to be the opposite, but it took six days for officers to learn about the mix-up.
"I don't think it's fair for either family. For what mine did, and Marlena's family did, mine was planning a funeral while Marlena's was there sitting with me getting their hopes up," said Guerra.
After her recovery, Guerra and her family went to the Arizona State Capitol fighting for Senate Bill 1118 known as "Abby's Law."
This bill allows family members to meet with medical examiners if there are questions about the identification of the person who died.
"I don't like that I'm famous because of what happened because it's not a good reason to be, because it's a bad situation to begin with; the entire thing from beginning to end," said Guerra.
The Guerra family wants DPS to improve their protocols when it comes to contacting the relatives of someone who was killed.
In court on Tuesday, the family is demanding DPS officers get it right when they notify next of kin that their loved on has died.
The Arizona State Supreme Court will hear the case at 10:40 a.m.