I've actually read that WoJ and unless you're referring to different WoJ, I don't see anything in that WoJ that implies that gods need believers to have power or the ability to use it .
Where does Jim refer to beings at mab's level as "semi-divine"? Can I get a quote?
he refers to beings at the mab level as semi divine:
Ferrovax feels absolutely no need to boast. It's because he /is/ a Dragon, large D, an elemental force of the cosmos. He isn't some kind of Smaug hanging around a nice apartment. He's a Dragon in a more Asian sense of the concept, a semi-divine being who was once given authority over various portions of the mortal universe, and who was responsible for their orderly procession. There /are/ Smauglike dragons (though not nearly as many now as there have been in the past, thanks George!) but they are essentially nothing but emissaries and servitors created in the image of the real thing.
he's also used that term in regards to shaggy (tho i cant find the quote). I think Bob uses it to describe shaggy at that point as well. And, well, by my definition, he says she has godlike powers:
(about Mab and sanity)
Then again, "crazy" is generally considered to be a lack of connection with reality--and a lot of characters in the Dresden Files can MAKE reality. They might have a seriously skewed idea of the way reality should be, but if they can make it happen then they aren't crazy, per se.
its juts IMO, but immortal semi divine being who can change reality, raise the dead, and perform just about every miracle thats not in the first page of genesis? thats at the very least a demi god.