First of all, please, please do not return her to the pet store or breeder, as you're correct, they'll probably euthanize her so they don't have to deal with the problem, which may very well resolve itself...That shouldn't be an option. I'm assuming that when you got her she could see just fine? What brand/type/wattage of coil bulb was this that you used? Does she have any goop or crust in her eyes at all? Do her eyes actually look different than they did?
If you could please post a photo of her and a photo of her enclosure and lighting, and then give us the details of what UVB and basking bulb you're using now, along with what her Basking Spot, Hot Side, and Cool Side temperatures are, and what type of thermometer you're using to measure the temperatures with, we need to make sure her setup and lighting is now correct, that's the most important thing to get corrected while she's this young and hasn't been exposed to it for long. This will prevent other issues from occurring, and assure that she'll grow properly and stay healthy from this point on. Her eyes need time to adjust, but we need to make sure that her lighting is now adequate wavelength, strength, and at the appropriate distance from her Basking Spot and if it's obstructed in a way that will prevent her UVB and UVA absorbtion. If she's only been out from under the bad coil bulb for a day or so then you'll need to give her eyes some time to recover, unless she has goop/crust in them, as some bulbs are known to cause photoconjunctivitis, in which case she needs to see an experienced reptile vet ASAP for proper medication.