I've got a first-time broody on eggs. She has two mutt eggs that I gave her that are on day 18 today, and then she has 12 that I bought on here that are on day 14. So my question is... if I let her hatch the two mutt eggs and then promptly remove them, how likely is it that she'll continue to set for another 4 days to hatch my silkie babies? Do I need to remove the two mutts before they hatch so she doesn't quit on me? Thanks!