The helmet is a good call for any skier of any ability concerned about their own safety.
I skied all my life without a helmet until last year, and 2 hours into a weekend trip last January changed that permanently. We skiied Lutsen in Minnesota, and my brother, an expert skier who lived in Tahoe for 10 years and did his share of extreme skiing, was debating whether or not to wear his helmet given the warm weather (above 20 degrees, no wind) and the 'junior' status of this mountain (1100 foot vertical, 1,000 acres) compared to what he was accustomed to. His wife convinced him he should wear the helmet anyway.
On his second run, he decided to take a more difficult run directly under a chairlift that only qualified as a black due to the fact it was an ungroomed, relatively narrow run. At the end of transition on his third turn, his skis came down on a covered root system and he double ejected, catapulting face first into another root system down the fall line. The brow of his helmet impacted first directly into a large, protuding root before the rest of his face, followed by his body, impacted the snow/ground/roots and he tumbled several meters down the hill. He cracked his goggles and lacerated the bridge of his nose and chin, but he was fine. Had he not been wearing his helmet, he would have been hospitalized with severe head and face injuries.
At the bottom of the groomer next to that run as we examined my brother's injuries and listened to his tale of the crash, we witnessed a ripping snowboarder take a lip off the last rise of the run and clip the head of a slow-moving, very in-control, intermediate skier below who was also very fortunate to be wearing a helmet ... she was knocked over but did not sustain injury.
I made my decision right there to begin my traverse toward the ski shop to get myself a helmet. On my last run down to the base, I witnessed a collision between two skiers, one of whom was not wearing a helmet and who ended up with a pretty severe concussion ... he was groggy, didn't know where he was, and had severely blurred vision when a few of us stopped to assist him.
I will never ski without a helmet again, regardless of terrain, circumstances or weather. Ghost, I understand why your Mom is happy now!
Edited by LaneMeyerK12 - 11/13/10 at 10:24am