Attempt to poison the well noted.

Sorry, you're wrong. When I started, I didn't know if Nancy was right or not. But as I looked into it, and saw she had to come up with more and more varied excuses for why her predictions didn't pan out, and that cornerstones of her idea contradicted observations I could make myself, I came to the conclusion that she was not only wrong, but galactically wrong.

You have no evidence that any of Nancy's detractors started from any assumptions whatsoever.