University of Arizona student's family talks after Circus Circus death

Hundreds of thousands of people showed up in Las Vegas for the Electric Daisy Carnival, which is a huge, three-day rave. 

One of those people was 22-year-old Emily McCaughan, a pre-Med student at the University of Arizona. 

On Monday morning, she was found dead after falling from the 27th floor of her Las Vegas hotel room at Circus Circus.

Her family can't understand how this could happen to a girl with so much hope for the future.

“She was 22 years old and already lived more than most people would dream of,” her father Richard McCaughan told ABC15.

“She expected so much out of life,” said her mother Jaci McCaughan.

Something went wrong.

“Last Monday morning, my life stopped,” said Jaci.

“She was at the EDC concert. She and her friends took ecstasy,” Emily’s sister Megan McCaughan said.

“I know she became very paranoid,” said her mom.

“She'd taken the SIM card out of her battery because she believed people were tracking her through her cell phone,” Megan said.

Emily’s dad said she was scared. So her friends put her in a cab and sent her back to the hotel.

“She proceeded to send her friends Facebook messages saying, 'Help me, I'm in the hotel room, they haven't come for me,'” said Megan.

“The place where she should have been the most safe… tragedy unfolded. There was rumor of noise, a lot of noise in her room and yelling,” said Richard.

“Security went to the room, knocked on the door, nobody answered. They proceeded to open the door,” said Megan.

“She had a delusion somebody was after her and then somebody breaks into her room. The fear would go off the scale,” said Richard.

“Her only way out was through the window and she tried to escape the window,” Megan said.

“Why didn't she call me? She would call me about everything. Middle of the night, my phone was always sitting next to my bed for her and I don't know what was going through her precious mind at that point. I just know she went to that window,” Jaci said.

Emily's sister said the window on the hotel room opened about eight inches, which was enough for Emily to squeeze through. 

The toxicology report isn't back yet.