I recognize the attitude from the days when I was a heathen, and it's not really "oh ick," even if that's how she's stating it.
Her response is one of fear -- real fear. She feels God's presence, and is afraid because it means that all of her carefully nurtured, self-centered beliefs and opinions are wrong. It means she's not what she thought she was. It means that she's got to die to this world, and be born again.
Christianity is a very simple religion. It's also very expensive.