As the girl is only 14, this would be very rare. never say never though. good luck
Ovarian tumours and cancers can cause an increased hCG level. Other than that, pregnancy is the only possible solution. If you are steadfast in that she has never had intercourse, then insist on a repeat hCG level and an ultrasound on the ovaries and the uterus to definitivley ascertain pregnancy or ovarian growths.
Yes, it does sound like she had to have had sex. Sorry. good luck
Sounds like someone is lying about having had sex... Just be honest and calm when talking