"That was the longest, strangest, craziest two seconds of my life," she said.
One Instagram photo, posted before her death, showed Burns sitting along the edge of the canyon with the caption: "That view tho."
An investigation into the accident is ongoing.
Tributes poured in for the 35-year-old, who was remembered as a vibrant person with a big heart and a contagious laugh.
Burns, who worked at Yelp, also ran a popular fan group for the DJ Kaskade.
Burns formed the group Kaskade Konnect on social media, and organised get-togethers among fellow fans.
The Grammy-award nominated musician, born Ryan Gary Raddon, wrote on Facebook: "Colleen showed up in my life before the tidal wave of support had hit.
"She had such an unmatched enthusiasm for life; the fire in her eyes and that crazy infectious smile. They were the whole story.
"Colleen was destined to be a star among us. She never wanted to be looked up to though - it was genuine kindness, and absolute nurturing of a community she grew, from a soul that only knew love."
Yelp also issued a statement that read: "Colleen launched the Yelp community in Orlando nearly seven years ago.
"Her passing represents a tremendous loss to our company, the communities she supported and the many friends she made while doing what she loved."
Burns' friend Dena Davis wrote: "I met you, several years ago, we ended up at a dance club with a tattoo parlour. Instantly I knew we'd be close friends forever.
"It was always the silliest, best time with you. We laughed so hard, we danced so hard.
"And later that night when I watched you get lyrics to a Kaskade song tattooed on your arm, I remember thinking, THIS girl gets it. THIS girl knows how to do life! THIS girl is as REAL as they come.
"Orlando lost a precious gem. The world lost one of it's best and brightest. Love you forever and always, my girl. Keep dancing.
