Skiing skill level varies enormously depending on whether you're a volunteer (National Ski Patrol) or professional. It also varies enormously, especially for volunteers, depending on the size and difficulty of the mountain. A friend of mine is at best an intermediate skier but a very small hill near Tahoe is happy to have him as a volunteer. Squaw--not so much.
Mr. Crab--I'm glad your wife was able to save that young girl's life. It also sounds like she had the good sense to get out of the way once the EMT's arrived. Here's another story--when I was a med student at Michigan one of the fourth year students arrived at an accident scene to find a victim having trouble breathing and about to arrest. They performed a cricothyroidotomy. It didn't do much for the patient's tension pneumothorax. Here's another story--in Arizona a dentist at an accident scene told the EMT's that the patient's airway was compromised and they should be transported by ambulance where they could be suctioned, and not by helicopter--which could only transport the patient strapped to a skid (it was a long time ago). The police on the scene arrested the dentist for interfering. The patient went by chopper and died. In France doctors ride on ambulances. When Diana was injured I recall that it took a very long time at the scene before she was transported--maybe an hour? Some people felt that the desire of doctors to treat her at the scene might have cost her her life. And here's another one--when I was a resident a patient came into the VA hospital where I was working at night with a ruptured aneurysm, in extremis. There were no OR nurses or techs on call. I was fully capable of operating on a ruptured aneurysm. What neither I nor any of the other surgeons on duty could do was find and lay out the instruments in time. In general, we are all good at what we do, especially when we do it in familiar surroundings, and not so good at doing what other people do. Make of these stories what you will.
Back to OP--if you want to go to med school get straight A's, take an MCAT study course if you can, do research and as many extracurricular activities that might relate to helping humanity as you can, if you take a year off don't spend it as a ski bum, apply to as many schools as you can afford to, be prepared to apply for a couple of years, and accept the fact that it's a lottery. This is all bullshit and marginally related--if at all-to being a good doc, but it's what you have to do. (Oh, and think about establishing residence in a state that has a lot of state school spots for residents--like Texas. In California you're screwed.