"What disease do you mean? I don't think I'm sure Will has it either. Why do you ask that? Did you see anything happen to Will?" asked Drake, which sounded probing to Marion's ears.
Marion didn't want to react to the question, she just wanted to know. If Drake had been friends with William for so long, shouldn't he have known about this?
And that meant, Drake might as well be the same creature as William.
Indeed, Marion had been calling it a disease all along, because that was what Doctor Jefferson's wanted her to believe. However, she knew and was well aware that it might not be a disease. Then what's the name?
"I saw him furry and moaning like a dog."
That was all the information Marion gave unless Drake asked further. However, she certainly wouldn't say the part where she made love to William, even twice.
Should she affirm that the first thing she did was unconscious?
"Oh ... that's what it looks like."