I think there's a deeper cultural problem here: that the behavior of Joe had that much of an impact on Justine's life in the first place. There are women that would experience the same thing, but would not retreat into themselves in this extreme way. There are even women that would shrug it off. However, the response of Justine matches ancient societal expectations: if a woman has been violated, she loses all value.
Why would anyone still believe that in our modern society? Because like the vilification of gay people ('gay' and 'faggot' are still a word used by virtually everyone to put things down as 'unmanly' or generally 'shameworthy') it has has entered the undertow of culture, where it is less apparent, but just as strong.
When someone is raped, we say we understand that her life is shattered, that she will never recover. It's part of a general acceptance that certain events mean someone's life is 'over' (death of a child, significant other) and that they may never recover. This acceptance implies expectation. Stronger women are questioned, seemingly admiringly, but actually judgingly: 'How can you just continue living after this?' with a hidden 'you are supposed to have broken!'.
It's easy to say that being raped should be like breaking a leg: an unfortunate event that can happen during a lifetime in human society with all its strange and from which you can recover after some pain and trouble. The difference is of course that one was inflicted on purpose by someone in your social group, while the other is usually self-inflicted or at least accidental. That this makes a difference is actually part of the same problem: that if you've been bested by another in your social group, you lose status and value. This also has ancient origins and as a result has deep roots in our minds. A chimpanzee with a broken leg doesn't lose status if humans take care of its leg. It only loses status if it loses a fight.
What is the way out of this? Make a conscious effort not to believe these things anymore. Raise your children not to believe these things. Don't participate in them and scold everyone that does them. Teach them it doesn't matter if someone has asserted dominance over them and that their lives are no less valuable as a result of it.
Justine, please seek professional help. Find a therapist that will work on changing the beliefs that have caused you to experience this event so strongly and caused it to have such an influence. There are lots of women on whom a similar experience had a weaker effect. This is not because you are weaker: it is because of what you were taught during your life, because of your beliefs. It is hard to change beliefs. There are many emotions connected to them, which makes you recoil from touching them. A professional therapists will enable this process, after which I hope you will look back and think "why on earth did I believe those things so strongly that a single event could have such a strong influence on my life?!"