It was a guess. And not an entirely implausible one.
Yes, apparently some people have an extremely emotional reaction to seeing the word "willing" anywhere near the topic of sexual exploitation, but that's not a good enough reason to break out the torches full-on. Especially in an academic environment (where people are supposed to be able to think first).
"but the most plausible scenario is that she presented herself to him as entirely willing. "
Is the quote from EMS I mean. The one who started all this.