I don't have any answer for you but I am just shocked to hear there is such a law. My being unfamiliar with the Swedish judicial system doesn't help either. Many states here recognize jury nullification as proper. My state even has it in the state constitution - jurors are expected to not only decide on the case but to decide whether the law itself should exist. The jury can all agree that the accused did what the charges say but also agree that the law is absurd so return a verdict of "not guilty".
The logic behind the law is that it should be pointless to threaten rape victims. If there´s nothing the victim can do to stop the process there´s no point in threatening her to withdraw her report of the crime. This was a problem prior to the law being passed. I used to think it was a good idea, until now... when I´ve realized the bizarre effects it can have.
Technically they´ve moved rape from the individual to the state. So if you rape somebody the plaintif is the government. The victim is reduced to a witness.
That's ... dumb. I understand the rationale, but it's a pretty dumb rationale. She does, at least, get to testify for the defence, correct? Tell the jury that nobody was assaulting her?