KING-TV, Seattle

A woman who was severely burned in an explosion at a coffee stand last week died on Monday, according to officials.

Fire investigators said they believe a propane tank contributed to the fire and explosion at Sinners and Saints Coffee stand in Everett, Wash., Thursday night, but they have not determined the exact cause.

Courtney Campbell, 25, bought the business a few months ago and had plans plans to open another stand, according to her friends.

"There's no words," said Ben Scott, who calls Campbell his best friend.

Initial reports said Campbell was able to walk to a medic's gurney, but on Friday friends said her situation was much more dire. Her boyfriend said she has burns over 80% of her body and is in a medically induced coma.

"I want to be able to wave a magic wand, make the burns go away, roll back the clock and get her out of the stand before the fire starts," said Scott. "I can't do that, unfortunately."

Scott said Campbell was the kind of person who never asks for anything, but always looks out for others.

"My roommate and I were short on food one day," he said. "I just mentioned it in passing, and she took me to the grocery store. She never asked to be paid back."

Campbell had two young daughters.

Friends are holding a fundraiser on Jan. 16 at Tony V's Garage in Everett.