If Cheshire said there was no evidence of her having had sex at all then either Joe Cheshire misinterpreted the results he was given by mistaking no match to the guys as meaning no semen at all in her, or he was spinning the results he was given, or he simply misspoke from a mindset of thinking in terms of the lax guys' jeopardy only.
Yeah, but as I said that gives me nothing to go on. :-)
Shoot, now we find out about this other lineup.....
Now I've got something to think about!