been there done that, at your age you probably dont have the ability to deal with it, i certainly didnt.
There is a way though, heaps of people at tuckermax do it with a 50/50 success rate, its basically being patient, push the boundries at far as you can and then go back a little[then push some more once shes comfortable with the new boundries] just baby steps. Tell her some lies or reassure her [ it doesnt count if i dont cum in your mouth, its not sex if i only put the tip in lol] and in a completely non confrontational and supportive way, question her beleifs in baby steps with the boundry pushing. Slowly get her to see that not everything in the bible is literal, slowly change her views on sex before marriage etc etc.
You probably wont be able to do it so dont bother, but if u do try it and it works then good on ya. Personally its much less effort to find a girl who allready has a normal view on life rather than breaking in a messed up girl.