She sustained a skull fracture and broken leg. And seven months later, she is still going through rehab for her severely injured lower limb.
That's why, as NBC 6 South Florida reports, the 29 year old plans to sue Ultra and other defendants for $10 million.
See also: Erica Mack Discusses Ultra Lawsuit
Following Mack's trampling, there was significant backlash from politicians like Mayor Tomás Regalado and City Commissioner Marc Sarnoff, who called for the festival to be banned from Miami.
City officials accused UMF of failing to heed warnings about weak fences at exactly the location -- SE First Street and Biscayne Boulevard -- where Mack nearly lost her life.
Meanwhile, Miami Police Chief Manuel Orosa suggested that criminal charges could be brought against Ultra organizers.
Ultimately, Regalado and Sarnoff took a resolution "prohibiting [downtown Miami's] Bayfront Park Management Trust from holding the Ultra Music Festival in the future" before the Miami City Commission. But it was voted down, 4-1.
In the wake of Mack's injuries (and in the midst of battling Regalado and Sarnoff's proposed ban), Ultra announced the hiring of Miami Beach Police Chief Ray Martinez as the festival's new security director.
The move assured some that UMF was committed to the safety of both its staff and festival-goers. But others, including New Times, remained skeptical.
Over the course of the intervening months, Ultra has continued to make changes designed to prevent future tragedies, like abolishing its all-ages approach and instituting a strict 18-and-over policy.
Of course, though, a new Ultra security director and a new age limit can do nothing for Erica Mack. And this Monday, according to her attorney Eric Isicoff, the injured security guard will speak in public for the first time since the trampling to announce her lawsuit against the festival.
(The other defendants in the case include Ultra's parent company Event Entertainment Group, the City of Miami, the Bayfront Park Management Trust, festival contractor Best Beverage Catering, fencing company Carlson Fence, as well as Mack's own employer Contemporary Services Corporation.)
In response to news of the suit, UMF issued a statement today via email, which directly addresses the case only in its final paragraph. "We continue to wish Ms. Mack the best for her future and hope she has made a full and complete recovery," the rebuttal reads, "but the complaint her lawyers have now filed as part of a lawsuit does not properly recite the facts of the unfortunate accident.
If you like this story, consider signing up for our email newsletters.
SHOW ME HOW
You have successfully signed up for your selected newsletter(s) - please keep an eye on your mailbox, we're movin' in!
"Without question," it concludes, "event organizers believe that the incident was caused by illegal actions of unknown third parties for which it is not responsible."
Crossfade's Top Blogs