Perhaps the author, Penelope Love, would be willing to publish it as a kindle book.
If it sold well, it would be easy to pick up a publisher or to persuade Chaosium they wouldn’t lose money on it. I’m sure it isn’t easy being a game publisher.
And Kindle is *much* better than nothing. Word of mouth marketing (plus the author’s fan base) would ensure a pretty good return for publishing it on Kindle in any case, which is relatively easy to do with a finished manuscript in hand.