I don't understand why the family would bring out the white sheets, since what happens in their marriage is none of their concern. It is quite sickening. Not only that the foundation of your relationship is based on mistrust. What if(most likely) she was a virgin, then she gets to know about your little dirty plan, imagine how she would feel. I certainly would feel betrayed and disgusted especially if the family knew.
Then the there is the ignorance on how a woman's vagina works. Not every woman will bleed. The hymen could break from exercises, accidents and some women don't have a hymen at all. Does this mean she isn't a virgin?NO, since she hasn't had sex.