I agree with Oooona. (love that nickname, btw) .
I don't if this young is currently in any kind of counseling, but fact that she in a sense came clean with you about her past indicates to me she is not trying to "hide" that from you. Being honest and open are good things. Many addicts do not divulge that information. She definitely needs counseling for the rape. Ideally with someone who specializes in that. Many rape victims can sort of be traumatized again, for example when they are physically examined by Dr.'s and nurses after the rape. They can feel like they are re-living it.