Those are not it. As StarBrite310 mentioned, there is no logo to be found anywhere on the glasses. I'm thinking they're a no-name brand from Urban or something, just cute and cheap.They're Ray-Ban Wayfarer in Tortoise. You can get them at
A lot of replica wayfarers have the studs on the glasses. Even so, the Ray Ban logo would be present on the arms of the frame.They look like Wayfarers to me...they even have the little silver horizontal line in the corners.
She could have gotten customized/prescription lenses and thats why they don't have the "Ray-Ban" marking on them.