I've been holding off on posting on this thread since I know nothing about mutations! But now that it appears you all have decided she is a lutino, I just want to say that I think she is absolutely one of the most stunningly beautiful budgies I've ever seen.
To say nothing of one of the luckiest since you rescued her from a horrible life and gave her a safe and loving home!!
Thank you for posting, finally
It is very kind of you to say this. She really has made a difference in our life, kind of like a new born baby would do.