I have a 7 1/2 month old Silkie that gets very broody. I collect the egg she lays every day. However, I'm considering obtaining some fertile eggs to let her hatch on her own. Is that wise? Will she stop laying her own eggs? If she continues to lay, do I just collect the infertile eggs and leave the fertile ones to hatch? Will she know what to do? I'm new to this, so I'd appreciate any advice. Thanks!