She would’ve known to turn them the right way. Everything you did was fine, and would’ve caused very little (if any) harm to the eggs. If you candle the eggs does it look like they have internally piped? 6/10 isn’t bad.
Hens aren’t the same as incubators you can check under her much more often. You can candle them whenever (since this is a hen rather then an incubator), I would leave them until day 25 before I candle them, that means there is as little disturbance to them hatching. But overall with hens you can...