Shelby speaks as to truth. You ask her something, she is going to answer truthfully. You ask me something, and I won't lie, but I tend to refrain from what I think is truth if I think it is going to hurt someone at all. Different body members, different strengths and weaknesses. I personally think that is a good thing.
So do you agree with what Shelby said, that I am alcoholic, I am miserable inside, that her God is going to get me for my sins? If she speaks as to truth, that must be true since she said god told her.