I think your Sammi is a cobalt blue single factor golden face opaline budgie.
The amount of yellow on her head/face makes me believe that, it just seems too yellow to be a yellow face type II. And in single factor golden face budgies, the yellow does spread to the blue feathers when moulting.
RIP sweet Tito (Summer 2008 - January 17th 2013).
You are missed and never will be forgotten.