Gretchen is one of the Fireside Girls in Danville Troop 46231.
Gallery
Gretchen with regular eyes
At the Mt Rushmore gift shop in "Candace Looses Her Head"
In "Lights, Candace, Action!"
In "Isabella and the Temple of Sap"
In "Rollercoaster the Musical"
Deleted scene from Across the 2nd Dimension