Have to agree with cbg. Unless the sexual activity occurred PRIOR to age 14, or there was significant documented injury, or, unless the perpetrator was somehow either related to or in a position of authority over her (which burden would be on the prosecution to prove), then the incident would likely be prosecuted as a Class C felony with possible penalties as indicated. Had the military authorities gotten ahold of the case back when it happened, different story. But that ship has now sailed.
In addition, now that 8 years have gone by since the incident, chances of prosecution have declined dramatically, and will continue to do so as time passes. Even if a 3rd degree rape case CAN be prosecuted before a minor victim reaches 30 years of age in OR, doesn't mean it WILL be prosecuted. Much will depend on if the prosecution can PROVE the case with whatever evidence they are able to gather or preserve. If it comes down to she says it happened and he says it didn't, the case dies. If there were medical reports, witnesses willing to testify, or some physical evidence was somehow preserved, then the state may have a shot. In any case, unless it gets reported, nothing happens.

