She's got what appears to be the Ray Hine hypo gene being expressed in the heterozygous form. The Ray Hine line hypos date back to the late 90s and were the beginnings of the Hypo Tangerine Carrot-tail mutation(s). This hypo gene acts in a co-dominant fashion. In the homozygous recessive form (no hypo gene present, 2 recessive genes) you get normal pigmentation/spotting. In the heterozygous form (1 recessive and 1 dominant gene) you get geckos with head spotting and sometimes retained body spotting, as seen in your gecko. In the homozygous dominant form (2 dominant genes expressed) you get a gecko with extremely little to no head or body spotting. All 3 genetic variations will have tail spotting.
When bred into the selectively bred tangerine genes, as well as the carrot-tail gene(s??) you start producing what are called hypo tangerines, super hypo tangerine baldy, hypo tangerine carrot-tail, and super hypo tangerine carrot-tail baldy. The "baldy" reference is to indicate that the animal is genetically homozygous dominant and visibly showing extremely little to no head spotting.
Additionally, if she's a Petco or PetSmart pick up, there is strong potential for her to have the genetic-snow genes (aka Mack Snow) present, which also function as co-dominant genetics.
