Your new piggy could be stressed out- stress can result in hair loss. The best thing to do is take her to the local exotic vet, and get antibiotics for her eye and a check up to find out what could be causing the hair loss.
When should i take her to the vet?
Great idea jaycey, saving a little each week is a good idea@Ellenb You would need to ring a few vets to find out how much they charge as it cam vary.
A fungal issue won't go away on it's own so it needs a vet to intervene.
Unfortunately part of owning pets is having to pay for vet visits. It"s worth starting to save a little each week to cover them.