Actually her activities within a short period of time, before her examination is relevant if those actions COULD have caused her internal irritations. The state alleges that the redness is material evidence in the accusation that the accused Kobe was the only one to have been capable of producing the injury.
He, the defendant, is allowed to produce any relevant information to contradict her allegation. In this case 100 or 1 other is prima fascia evidence that there is/was someone else that could have contributed, and thus casts doubt! Even in Colorado.
Sex is an act that involves two people......I have to ask myself why the law only affords legal recourse to one of them if the act is not performed to her liking. In the interest of "sexual equality," I've come up with an option. Maybe men should be given equal time by allowing them to bring charges against female sexual partners for "being a bad lay." That way, the playing field would be leveled and both participants could enter into the act with the fear of legal charges hanging over their heads......wouldn't that make sex fun???