I don't see how it is her fault at all. The piecings aren't WMD or anything stupid like that. I'm not taking my dang piercings out for anyone. They don't set off the detectors there isn't that much metal in them to do so. You can see by the picture how small they are.
The wand is more sensative and my bra hooks have set that off before, but I think the guy was a perv and just held it there until it beeped because then he had to practically feel me up to make sure I wasn't lying about wearing a bra