Are you sure she isn't laying? Silkies and Cochins lay very similar eggs in color and sizes. They may both be laying but not steady enough for you to have gotten 2 eggs in one day.
Or she could still be maturing. Silkies mature more slowly, and if you are in the northern hemisphere, you have short daylight now. As another poster stated, it takes 14 hours of continuous daylight to trigger the hormones for laying.
Or she could have laid an egg or two that you thought were the Cochins and is contemplating brooding, being a Silkie.
But if she is still growing new feathers, she is likely just maturing slowly and had a late juvenile molt that she is slow to come out of due to the short daytime hours.
LofMc
Or she could still be maturing. Silkies mature more slowly, and if you are in the northern hemisphere, you have short daylight now. As another poster stated, it takes 14 hours of continuous daylight to trigger the hormones for laying.
Or she could have laid an egg or two that you thought were the Cochins and is contemplating brooding, being a Silkie.
But if she is still growing new feathers, she is likely just maturing slowly and had a late juvenile molt that she is slow to come out of due to the short daytime hours.
LofMc