Maybe she was following all the safety procedures and sneezed bringing her head and hair closer to the lathe than normal. In an instant it's too late. We may never fully know what lead to the accident. Such a loss...
If she was following ALL of the safety rules, her hair would have been tied back and under a hat.
That being said, this is a tragic accident and a terrible loss and reminds me of all of the safety rules I personally only sort of follow. I'm sure I will think again when I go down to my shop.