As is clear from photos on Berkenhoff's Facebook page, she's no climbing novice. Here's an October 2016 shot captioned "Bouldering in Boulder":
At approximately 7:37 p.m., the Boulder County Communications Center received a 911 about an injured rock climber.
The address, 32000 Boulder Canyon Drive, corresponds to an area near Boulder Falls.
According to the BCSO's Leak, Berkenhoff was climbing the "old-school" route of the Bell Buttress with two others and using a belay — a device used to manage rope slack and tension — when two pieces of rock protection pulled out.
Berkenhoff fell approximately 20 to 25 feet, breaking her ankle and potentially suffering the aforementioned spinal fractures.
Rocky Mountain Rescue Group, Nederland Fire and AMR Ambulance assisted the BCSO with the rescue that followed; a helicopter was also on call but wasn't needed. And it's a good thing the crew was so large: The sheriff's office notes that the climbing area was on the opposite side of the creek from the road, so personnel had to set up a Tyrolean traverse, as seen in the photo at the top of this post, to transport her across the creek in a litter.
As for Berkenhoff, she was transported to Boulder Community Hospital. At this writing, there's been no update on her condition.
By the way, the BCSO points out that the Rocky Mountain Rescue Group is "an all-volunteer, non-profit organization serving the Boulder County area, and summer is their busiest time of year." Anyone interested in donating or volunteering is encouraged to visit RockyMountainRescue.org.