I understand moving the nesting box could cause a broody to stop setting. Rather than moving her prop her nestbox lid open and drape the opening halfway with a tarp or towel depending on how large her nestbox area is - that way she will still have some privacy but there will be enough cross ventilation while she's nesting - might be better than a fan draft blowing on her. That's excellent that she's coming out to eat and drink. Our Silkies brood so hard we have to remove them gently a couple times daily and put them down in the farthest end of the yard so they have to forage and dust-bathe for exercise before running back to their nest. GL with your girl!
She has given him a few hard pecks so far, but otherwise she leaves him alone as long as he does the same to her. She has been giving him quite a few stare downs though. They both will lean forward towards each other, Stephen with his neck feathers standing, and just stare. It's hilarious. XD
22 years is a long time to have such a loved pet. It makes it so hard to lose them. It's hard no matter what, but losing a pet after so long.... I just can't imagine. 
It's a little big yet, but he at least can't get it off and it stays over his vent. He hates it. He is swapping between walking really funny trying to get it off, and just laying down and giving up. 
