Thos are pretty small white earlobe. She must be heterozygous for a few of those genes.
Talking about White Ear Lobes and White Face.
I believe one could make a Blue Face bird by combining the White Face from the Spanish breed and the Blue/Turquoise found on Silkies.
White earlobe is a polygenic trait, and some of those genes are sex linked.
Inheritance of Earlobe Color in Poultry
https://eurekamag.com/research/024/865/024865079.php