Bryant said she has been receiving calls and messages all weekend from Jeremy's friends at Brighton High School, where he was a sophomore.
"There's parties tonight all over the valley of all of his friends," she said.
Tributes and messages appeared on his Facebook page, which is topped by a photograph of him break-dancing in redrock country.
"I remember the first time we had a dance battle," wrote one friend. "You won. ... Keep dancing up there. Have dance contests and show heaven what you are!"
Shahri Bryant said family and friends plan to hold a vigil at the dune where he died. He broke his neck and died at the scene, she said.
"He was well loved and changed a lot of people's lives just by going up and tapping them on the shoulder and smiling," Bryant said. "He helped and loved everybody and had fun doing it."
Jeremy Bryant is mourned by an older sister and two older brothers, one of whom recently returned from an Army tour in Afghanistan. The other, 17, was Jeremy's "best friend," Shahri Bryant said.
The family is planning a memorial service Friday; details have not been finalized.