Wow, when I looked at the PM photo of Mary I was taken aback at just how Persian she looks... she could be straight out of one of my family photo albums (hair, makeup, and her face is just very very Persian-looking).
Some thoughts based on that:
I think it's most likely that she's an immigrant due to the year (90s) - at her age, she would have had to be born in the 60s or earlier and most Iranians immigrated post-revolution in '79.
Persian communities in the US are incredibly close-knit, everyone-knows-everyone type situation. Has anyone tried posting in Iranian-American/Iranian immigrant Facebook groups? I don't even know what exactly to look for but I am sure that someone would somehow recognize her (especially if someone could make a Farsi and English flyer).
Regarding the Bible - Persians in the US tend to be very secular but I know that spirituality isn't uncommon and therefore, bible isn't too weird to me. My father doesn't consider himself Christian but reads the Bible and goes to church because... well I don't really know, but this isn't too uncommon of a thing. Many people also turn to religion in times of extreme despair, especially with a Bible right there in the hotel room, I don't think it necessarily makes sense to profile her as being of any specific religion.
This makes me so sad. Someone in CA and NY's large Persian communities would definitely recognize her.