What the parents (People in General) don't realize is its a game that welcomes all (with some exceptions) and if we choose to build a Satanic Church, we'll build it.
I respect her for monitoring her son but honestly, its not like the build will affect his life in any way.
I personally don't believe in any God, I'm an Atheist and things such like Satan, Hell, etc. Have no affect on me. I have a feeling she may be a bit overprotective (IMO).
When I was his age my mother cared about what I was exposed to but she allowed me to view/ learn about the kool kids klub, Satan, etc.
Oh and, What could possibly wrong with worshiping Satan? (IMO) Its a religion (Or something related to religion), there will always be people who follow the religion.
Edit: Grammar Fail (Posted late at night :P)