Sure, it's not their fault, but most people don't really seem to recover that well. There are huge issues from that, typically for life. She might seem like she's all better early in the relationship, "Your love healed me!", until she's off with another man, letting a certain part of the other guy's body "heal" her. This has actually happened to someone in my family, so it's not a hypothetical scenario.Being molested or raped isn't one's fault, just like having crap parents or being born into a bad situation.
Abused people often feel broken or unlovable, so while I think it's useful to know that you can't "fix" others, it's possible to get past problems.
I also know of cases where the woman married young and was faithful to her husband, but even after decades of marriage, still had problems with intimacy with her husband. One middle-aged woman said that she sometimes couldn't stand for her husband to touch her, not because of anything he did, but because of what her father did when she was a child. Can you imagine being a man whose wife is crying in serious emotional pain, and not only can you not go back in time and protect her from it, but you can't even hold her because she can't stand to be touched by a man at that time?