I've heard theories that "Jeanna F. Gallo" is really a psuedonym for Anne Rice due to the similiarities between "Sub Rosa" and "The Witching Hour". It certainly wouldn't be Rice's first psuedonym. Memory Alpha presents this theory as fact, but also doesn't provide any external sources or evidence. Is it theorized that Gallo is really Rice, or do we know it for a fact?
According to the TNG Companion, 2nd edition, p. 280: IMDb also jumps to the conclusion that Gallo is a pseudonym for Ms. Rice. I'd trust Ms. Taylor over them.