I've seen some "super hypos" that will show lighter markings around the head, but not the tail.

One thing I'm concerned about, more than her color, is that skinny tail of hers. I hope you're working on fattening her up.
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Owned by the following;
1 male minilop rabbit
1 male shetland sheepdog
1 male maine coon mix cat
1 female winter white dwarf hamster
1 male sunglow motley corn snake
3 male white's tree frogs
1 female Leptopelis vermiculatus
2 female crested geckos
1 male crested gecko
2 male leopard geckos
1 male crowntail betta