Or she might have been having her period. Blood in the car doesn't prove anything by itself.
I agree, and my apologies for the "idiot" comment.... (emotional response and it was disrespectful, I'm sorry...)
I just can't imagine that news of "blood in the car" would be leaked and then reported if it was from menstrating or if it was a first sexual experience. My take is, if it's being reported.... there's some sort of trail they are following.. (I don't mean blood trail, I mean they are following sequential events that may haev taken place... )