Broody came off..
Awww! Poor chick! And poor you! I looks right at 19 to 20 days right here to me? Hopefully the experts will chime in. I know it can take up to 24 days if they had gone cold a couple times in their incubation. I just read this information a day or so ago. Good luck!!!
I knows exactly how you feel.
I had a broody leave her nest early... and the eggs get really cold.. She was off the nest all day.
I looked on this site and read about a float test.
I floated the eggs in warm water... and the first sank to the bottom like a stone.. the information said that such an egg was dead as there was no air cell in it.
So I threw it over the back wall.. but it hit the top of the wall and fell into my garden. When I went to clear it up I saw a live chick in there still breathing and moving its leg. I felt sick and so upset.
More of the eggs sand.. and some floated. I dried them off and put them under another broody hen.. and they hatched out 4 days later.
So I think there is still a good chance your remaining eggs may hatch. It may help to raise the humidity to help soften the egg membrane in case the eggs dried out a bit when the mother hen left them in the open air.
If the eggs are moving just leave them for now. From rocking to hatch can take some time so try and be patient. Try and get humidity up around the 60 percent mark and go for it.