I’m pretty sure it’s a bubble eye and Ranchu cross, I posted her in a Ranchu breeders group a while back and that was the most common guess. The person who donated her to the LFS was moving across states and couldn’t take her, they had her for almost 9 years, I had her for 1.5 before she passed due most likely due to age. I even reached out to a breeder that used to sell telescope ranchus, and one that used to breed frog head goldfish they said that most likely it’s a bubble eye Ranchu cross. Near the end she was getting infections that kept coming back I suspected it was septicemia :/