Thanks peeps! I should be around day 7 or 8 and today I found one egg had been pushed out of the box, candled all of them and they all looked the same. Looks like about half of the insides is black almost like they're further along.. I put the one egg back with the others, if I find it out again tomorrow then I'll assume that she don't want it and take it out. After all, it might already be dead from being out for an unknown amount of time today. I also found that one of the eggs has been pecked and cracked a little, is that gonna kill it?
Also, if I find that the eggs are dying, if I put more eggs under her is she gonna abandon them on day 21 or will she wait till they all hatch?