Diane Ahlquist is a third-generation psychic. "Diane has worked with law-enforcement authorities across the country and was brought in to work on the case by Buck Buchanan at Angela Donahue's request (Stern 145)".

She is given a special mention in The Blair Witch Project: A Dossier by compiler D. A. Stern; "...Without whose active and enthusiastic cooperation the writing of this book would have been impossible (Stern v)".