Most Helpful Girl
I understand that you feel those things when you know that she got raped but you must think that she, even though she got raped I feel that she feel ashamed and dirty in herself that she thinks she doesn't deserve to love a person once again. In a relationship, you must love and accept her whole even though he/she has a bad past. You must let her feel/know that she's deserve to love even though she got raped. They need only one person that makes them feel that they are being loved or special. I'm sure she is truly happy to have you.
Most Helpful Guy
Nope. You're fucked, we're all fucked.
The past is there, and always will be. Don't dig up old wounds and just focus on making memories to outnumber the bad ones.