She seemed to have survived quite a long time by being quite self reliant, including taking care of injuries to both legs.
Her choice of bike, a Lectric XP 3.0 eBike, may or may not have been a factor, with maybe a range of 45 miles 70kms, but it seems that having a fall and then snowstorms becoming a factor were the kicker.
And yes, pretty darn lucky to have found that cabin to take shelter without her belongings.