I'm curious what you'd call her as well. That creamier white color probably means she is gold based rather than silver based (silver makes the white brighter/crisper). I've heard recessive white doesn't tend to allow other colors to come through, I don't have enough experience with it to say if it would occasionally allow a feather or two to come through with color. Dominant white is leaky and if she had one copy of it like paint silkies do whatever color she had underneath could leak through in spots. Hopefully someone with more experience can give you a better answer though, I'm still pretty new to breeding and understanding genetics.
Thank you for your reply. This is all so interesting but it takes me a bit of studying to grasp it. Hopefully someone will chime in soon. Thanks again