Isn't it mandatory for a "Fiona" to be redheaded? LOL
My Sara is a redhead also. All grown up and married now.
I'm thinking yes to the mandatoriness of the red hair. She dug back four generations to find it, and man it is red. Well, orange in all honesty. She was the baldest little think, but you took her out in the sunlight and her head looked like you had spray painted it. Sure makes it easy to spot her in a crowd....