Shelby is ill. thats the sad fact.
I think your use of the word 'fact' here, lessens your credibility with your other 'facts'... including in what I thought was your field of knowledge: mathematics/probabilities.
As it is, this is like having long arguments with a person suffering every symptom of major depression but are in denial and like to convince everyone the depressed world-view is the correct one.
Then why engage?
If God eventually turn evil on her (and i think i have seen signs that make me question if the voices are all good) she need to know modern medicine is the place to go.
Thank goodness she has people like you (self-proclaimed internet psychiatrists who have never spoken to her or met her) to depend upon to show her the way. Certainly, all the people who DO know her in person (from this site even)- family, friends, loved ones, acquaintences... and who vouch for her sanity, well-being, and overall awesomeness ;) ... have failed her in their ignorance.
Peace, despite the silliness here,
Tammy