Mate selection is the most consequential decision that a woman makes - rape negates this choice. The profound emotional damage is therefore unsurprising. Along with the physical harm to the mother, a child born to a rapist will usually grow up fatherless. For those women that find partners, their stepchildren suffer rates of psychological abuse, physical abuse, and even murder many times greater than children growing up with their biological parents.
The social stigma that rape victims experience can drive them to suicide. As we evolved, such stigma would have been a strong signal that survival is at significant risk. Tragically women who suffer rape are punished in myriad ways, many times over for the crime of being victimised. Given all of the harms in having people know of their rape, many women understandably hide it. Hiding it makes them suffer more heightened psychological distress. Law enforcement resources are insufficiently allocated to the problem because, with concealment, we do not know just how widespread it is.