But this is no pleasure and this one is a real X-Rated Horror.
It could be Deformed Wing Virus (DWV). Mites are dirty mouthed and like mosquitoes they not only steal a blood meal, they spread germs and disease as well.
What can the beekeeper do? There are various methods to treat the hive, some organic and others not. For myself, I'll be using a natural product called Formic Acid. The fumes it creates eats away at the mite's shell and weakens/kills it. The weakened mites lose their grip on the bee's fur and falls. Hopefully the fallen mite will land on the greased board sticky board at the bottom of the hive where it will stick and be held until it dies.
This girl will never fly or enjoy being a nurse bee but I hope I've given her short life meaning in a new bee task as an Education Bee. Let her example help you make decisions on how you'll care for your hives.