Mainstream Christianity has always resisted occult influences for good reason, it is dealing with evil.
In a British documentary, J K Rowling A Year In The Life, when asked if she believed in God, she said, "Yes, I do struggle with it, I couldn't pretend that I'm not doubt-ridden about a lot of things and that would be one of them but I would say yes.
In a 2008 interview with the Spanish newspaper El Pais, Rowling said "I feel very drawn to religion, but at the same time I feel a lot of uncertainty, I live in a state of spiritual flux. I believe in the permanence of the soul.