Well, I know this has been said elsewhere plenty of times, but I'll repeat it here:

We as a society LOVE to "blame the victim" of any crime or unfortunate circumstance. By rationalizing to ourselves that bad things happen to people because they either asked for it, or somehow deserved it, gives us the illusion of control. After all (the false reasoning goes), if the victim somehow asked for it or deserved it, then all WE have to do to protect ourselves from something awful happening to US, is to simply not "ask for it".

It is much more psychologically comforting for people to blame the victim, than to admit that they are just as vulnerable to becoming a victim themselves.

But how pathetic is it to find a person like your acquaintance, who would rather further victimize a crime victim with such hurtful words and accusatory behavior, than admit that sometimes bad things happen to good people. I suppose such cruelty and utter self-delusionment is a luxury of someone who has never been a victim of an unfortunate event themselves. Well, lucky them. Inevitably, it will happen to them as well (such is life), and that should put a cork in their ignorant piehole.

Until then, ignore such people, or at least see them for the unfortunate and misguided souls that they are; they have such limited life experience that they can't even muster up an ounce of compassion for a sexual assault victim.