If a person is going to teach self defense, I think it is appropriate to mention being careful of putting yourself in harm's way, such as walking in dangerous areas, or becoming drunk from alcohol or drugs where you can't make good decisions. But of course that is not all. Teaching some physical defenses seems almost too obvious to mention. If someone is going to attack you, you should know some defenses. But a big problem is teaching an 8 or 16, or even 24 hour course with no follow up and no continuation of practice.
Getting into the emotionality of past attacks is dangerous ground for those trained to do so, much less those of us who don't have a lot of training and experience. But I don't think any of us who decide to teach self defense can run from that either. But without that training and experience, I think instructors should have experienced social workers or counselors do that part of self defense classes, or at the very least, be able to provide contact points in handouts that all students get. The problem is that usually counseling takes a lot of time, along with experience. Not much can be done in an SD class of relatively short duration.
As to why women feel they deserved it, must have wanted it, or any of the other saws, is pretty much what our society teaches. And I think most of it comes from men trying to justify wrongs they have done. If "she" or "he" wanted it, the perpetrator has really only provided a service, not committed a crime. And it was not his/her fault, if the victim has acted in a way that seems provocative, such as clothing that emphasizes erogenous body areas, seems to be a tease, or whatever else can be used to blame the victim.
But still, it seems that women are held to a different standard, likely coming from times when women were considered chattel, and had to keep themselves "pure" for their husbands or parents who would be looking for suitable husbands, but men were allowed more latitude. We need to get all of society to realize a victim of a crime is just that. I am not sure how we can best do that, as too many people want to categorize victims of sex crimes as lessor beings, and make excuses for the perpetrators of those crimes.