Actually, the New York Times investigation found what she said they would find— corroboration from two people whom she told back in the day. Because her internal official complaint ended up in Biden’s office, she didn’t think it would be found, and it wasn’t. Her story is very credible, especially because she told people back when it happened, and they affirm that story.
To me, it only seems incredible by people who really don’t want it to be true.