It's quite amazing that some one at 72 who grew up malnourished and without access to modern medicine can still be in a good enough shape to survive in one of the harshest environments man has ever lived.
That's why life expectancy is so high now in the western world, it's not that people are growing far older than they did in the past or elsewhere, children just die very rarely and don't pull down the average.
However I'm not sure whether this is because what she's doing is an incredible accomplishment or I just treat my body horribly. She has probably more than 60 years of experience doing these things and kept in perfect shape her whole life. Just imagine what we might be capable, if we kept our bodies equally well in shape, now and in the future.
Maybe I should feel less impressed and more ashamed at myself or equal parts of both.
She gets regular help from others, and she hasn't been shy to ask for help. Also, she made several trips to nearby towns when she needed medical help.
Bottom line: people have lived just fine for thousands of years in much harsher climates, for example, a thousand miles north from where she lives.