Any benefit to killing Shany?

I'm in the cult room, killed all the people only to use the sacrificial implement on Shany herself. Do I get any powers for doing so?
I'm sure it makes me evil, but does it actually do anything in the game?
Game Skyrim Forum
http://www.gamesas.com/
http://www.gamesas.com/any-benefit-killing-shany-t412939.html
I'm in the cult room, killed all the people only to use the sacrificial implement on Shany herself. Do I get any powers for doing so?
I'm sure it makes me evil, but does it actually do anything in the game?