I've had a couple of problems with prescriptions being made up wrong (left and right lenses muddled up - at both Vision Express and Specsavers), so it could be that. I was only a child, and staff in both shops were reluctant to believe that there was a problem and told me that would soon get used to them. They did re-do the glasses on both occasions, and I have been going to Boots for about 15 years, and have never had any problems with them, but then again everyone makes mistakes! If your daughter thinks that there's something wrong I would take her and them back to check it out.