My girl bleeded the next day we just rubered each others body and she is still a virgin. Why would she bleed?

She's on her period? A likely reason for a young woman to have mild bleeding from the vagina, the day after non-vaginal sexual activity, is because she is having her monthly period. Some women are not regular, and so may have bleeding at other times than every 4 weeks. Another reason is that the rubbing was too strong, but then she would know, due to having some pain. If in doubt, a visit to the doctor can help.
Virgin. She has tissue in her private area and you may have caused some trauma by rubbing. She may have also started her period early. Hope this helps.