Dam is 16.3 sire is big too..you need to come see her...what about the lavender vulva?? was pink...odd ha? she has a huge cannon bone ask Devine..and her neck is about 12 inches from the ground when she tries to put her nose down..she is all legs..we call her Barbie..all legs and good looks.
Phyxis may be right lavender color skin is common with champagne gene.
However, way too many variables too know for sure.
"daddy is a perlino out of a champagne mare..." Interesting! What color was his sire?
Do you know if her sire or the grand sire and dam on her sire’s side had any color dna testing done?
Some common characteristics of a champagne horse are: pink skin, dark freckles especially around the eyes and on the muzzle, a shiny coat that is often slightly darker in the winter and eye color that will go through a number of color changes starting blue and evolving to a hazel or amber color.
So she might carry champagne, given your description of her eye color. However, Overos can have blue eyes or parti blue eyes also.
You probably really won't know until she sheds her foal coat or you get color dna testing done.
Do you plan to register her?