She doesn't know what they are. She does mention that it "appears" that they are not "aliens" in the classical sense. Whatever they are (and I don't think anyone knows at this point), they appear to be related to the paranormal or occult (as much as they want to be perceived as "aliens" flying around in nuts and bolts craft).
I read Pasulka's book American Cosmic and am currently reading her new book, Encounters: Experiences with Nonhuman Intelligences.
Somebody go get that guy with the weird hairdo.
He’s got all the answers.
“I;m not saying it was aliens. But it was aliens’’.
That dude. He knows the score.