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.…
No, that is not a deeper problem. It may be a problem, but it is minor compared to the fact that there are vast numbers of people who think that sexually assaulting people is okay. Different brains respond to severe emotional trauma in different ways. I urge you to spend some time with smart people with PTSD. Collect some data and evolve your beliefs.
Take a look at the list of factors that influence whether you will develop PTSD [1]. Take the 1st factor: why does being female increase the chance of developing PTSD? Because of physical differences in the brain? Surely, but certainly also because of the different beliefs females grow up to hold. What it means to be female is not just a question of physiology (according to some, physiology doesn't even enter into it). One way in which people with PTSD are counselled, is by changing the way they perceive themselves, which includes what it means to be 'female'. Take the 4th factor: having other mental health problems. Why does a person have those in the first place? Again, there are undoubtedly genetic factors, but at least an equal amount is due to 'nurture', which can be addressed by further nurture.
Reducing the number of people who commit sexual assault is the only way to get rid of the problem at all. However, I don't have high hopes for that in the short run, because you're appealing to empathic and rational thought, while sexual assault happens in circumstances in which those kinds of thought are put on the backburner by the perpetrator (because of alcohol or simply because he's a opath). I'm a pragmatist: I agree people shouldn't be sexually assaulted, but given that people are* being sexually assaulted and will keep being sexually assaulted for decades to come, I think we should also focus on helping victims in better ways. And the best help for them is to have a set of beliefs that cause you not to be devastated by such an event in the first place.
I admit all my knowledge of PTSD is third hand. I hope it stays that way. Nevertheless, I don't think I'm disqualified from making statements about things with which I do have first hand experience, such as changing your beliefs contrary to societal expectations, to increase your happiness in life.
What data concerning 'smart people with PTSD' do you believe I am missing?
[1] http://www.mayoclinic.com/health/post-traumatic-stress-disor...