This is NOT something that people should be doing at home! It's highly unsanitary, as she uses her bare hand to touch and rub in the lube that isn't sterile. That's a fantastic way to end up with a painful urinary tract infection, or worse. The mouth, fingernails, and rings on her hand harbor many germs alone, not to mention whatever else she came in to contact with prior to insertion.
I would like to know more as well
What is this insertion technique? What is it supposed to achieve? Does it work? Is it dangerous?