Diana Fisch, who lives in Switzerland with her husband and their other daughter, were unaware of the severity of their daughter's accident at first. The family rushed to the United States when they realized the extent Fisch's injuries.
"I thought we were talking about a broken leg," Fisch said. "I called Brenna expecting to talk to her and I got her roommate, who was frantic."
The roommate, she said, had been panicked that Fisch never came home that night and was desperately searching for her.
"The next thing I know I was talking to a brain surgeon," she said.
Authorities said Fisch was found without any traditional climbing gear or a helmet. Diana Fisch said that her daughter was already aware that she didn't come prepared for that particular trail.
"She said 'I felt so bad," Diana Fisch said. "She said it was irresponsible."