BTW, the proper medical term for collapsed lung is pneumothorax. There are three basic types: tension, traumatic and spontaneous. If you didn’t hear one of those terms or specifically traumatic pneumothorax on that recording, she didn’t have a collapsed lung.
What is highly likely is that either the wounds were sealed or a chest tube was inserted to PREVENT pneumothorax. The first technique is basic life support, a chest tube requires a paramedic or above.
Standard disclaimer: Not saying her injuries weren’t life-threatening or serious, they absolutely were. But some of the statements made about her condition, hospital stay and recovery appear to be exaggerated or inflated.
ETA: My ex had a partial pneumothorax after falling off a horse and breaking a rib. It was pretty much a nothing burger. Went to the ER, had the chest tube put in, lung reinflated, ribs bandaged, discharged. Pneumothorax can be a big deal, but with access to competent medical care, it doesn’t have to be.