She is still in there today and has collected 3 more eggs from the other girls. I think I will mark those eggs with a marker so she isn’t sitting on 20 eggs by the end of the week.She might..no guarantees, any bird can go broody and be successful, or not.
These are the signs I go by:
Is she on nest most the day and all night?
When you pull her out of nest and put her on the ground, does she flatten right back out into a fluffy screeching pancake?
Does she walk around making a low cluckcluckcluckcluckcluck(ticking bomb) sound on her way back to the nest?
If so, then she is probably broody and you'll have to decide how to manage it.