At the risk of giving this more time than it deserves...
...the woman in question alleges that the incident took place in 2004. Unless the statute of limitations is 12 months, that's still within the range of prosecutors.
Only after the first woman's allegations became public did the second woman, who alleges wrongdoing from much earlier, come forward, and I'm not at all sure the second woman is looking for anything except vindication. I heard on the Today Show that she thought, at the time, that no one would believe her. We'll see.
Also, if you want to establish statutes of limitations on "stuff like this", we will have a lot of pedophiles on the streets who would have been convicted based on testimony by adults concerning what happened to them as children. Be careful what you wish for.