Help! Day 24 i think

[SoutheastAK_chickens]

I have a broody silkie she went broody october 10th only 3 were viable then until day 18 we realized new eggs were randomly showing up from i believe our other silkie so we created a seperate brooder so she couldnt get extra eggs.. We candled on the 30th(day 20) to make sure they were good and still lots of movement from all 3 of them but no internal pipping. I know I took a chance candeling them on the 30th. Should I candle them again? What are the odds they are alive or dead? Is it possible these eggs were layed later and I don't actually know the hatch date?

Update!: all three eggs hatched! Definitely a scattered hatch date the first hatched Monday the second hatched Tuesday and the third hatched Thursday! Clearly none of the three were actually her original eggs she was sitting on they were stolen eggs from others days later! They all are healthy babies. Thanks for the help everyone!