This does make this case a bit strange. The woman in this case went to the police in order to ask them if it was possible to force a person to take a HIV test. While there she explain how she was half-asleep when Assange initiated un-safe sex, and when she heard about his other sexual partners a few days later she became concerned. When she contacted Assange about a HIV test, he brushed the concept off, which is why she were there at the police station asking them for help.
The result was by all reports (ie news papers), not what she wanted. They charged Assange for rape, which resulted in that she broke of any communication with the police and prosecutor, and refused to sign the written report from the police station.
Now, criminal case do not need that the woman agree with the charges, but it makes for a strange case. It also makes one ask for whose benefit this case is all for. All the men and women who is half-asleep when initiated by sex from a partner they previously that day/night had sex with?