Yes, we are loving our new babies! The two born in the nest and the two we bought are all doing great! Mama hen seems very protective and attentive. I gave them the bowl of water and pebbles, which is working well and a bowl of chick mash, which they all love.
I am pretty sure the other 12 eggs are duds. At the end of day 21, there is no peeping in any of them, and I tried the float test again and there was no movement. The hen also moved her nest out of the box I'd given her and left most of the eggs behind. When I checked them, they felt cold. If we just end up with what we've got, it'll be just fine. I'd consider this first venture with a broody to be a success. It was so much fun and such a great learning experience.
We might get a few more day old chicks tomorrow to add to the group. I'll let you guys know how it goes. :-]