Okay, well again do some good water changes and get the Coppersafe out of the water and see how she does for a few days.. If you can soak her food in some fresh garlic juice or some selcon to help replenish missing vitamins it should help...also Im assuming you are putting in algae sheets for her to chomp on? Just keep on your water changes and she may just get better on her own being out of that enviorment... did you happen to ask the LFS if they copper their tanks? (alot that are basically just holding tanks that are linked do and thats why they dont have any rock in them) Copper is SOOOO hard on fish...