you know there is plastic surgery that can easily replace the skin missing when doing a check on virginity... many girls from certain cultures get this operation without their family's knowing about it so that when checked - the doctor will verify they are still a virgin when in fact they arent.
Hymen reconstruction is requested most by Middle Eastern Muslim women
http://www.psurg.com/star2000.html
so the funny thing is.. you can be paying for your daughter to have a surgery you know nothing about and she keeps the profit