This seems pretty easy to me. But I guess I could see how it would be harder for some of you.
What's a Vulva? The outside of a woman's genitals.
What's the inside of the woman's genitals? The vagina.
What's another word for Vagina? A Vag.
What's inside of "VAG"? A.
What's an A, as related to anatomy? Like an A-hole.
What's another word for A-Hole? ANUS.
What do the numbers signify? Letters in the alphabet: IVHTR, respectively.
SO: ANIVHTRUS, which of course stands for:
Using the scientology dictionary we can decypher. Basically what it means is that one of the Novellas is clearly a former Scientologist, while the other Novella is a mole for Scientology and is outing the other Novella through this riddle and recommending that his pain and multiple personalities require significant use of the Scientology tech to be corrected.
If I'm the first one to figure this out, I may have overestimated the intelligence of this group.