Prove to me that Reverend has no Christian connotations?

Hi, as an ordained minister myself, I am not Christian but Spiritual, meaning that I do not subscribe to the divisions of The belief, but that I follow the word of God and the good of His word. I do not know why an atheist would use Rev in their title, except maybe they are using it as a mockery of what they do not understand. Maybe she was at one time a devoted minister and some horrible tragedy stripped them of their faith. There are many things that would attribute to this, so why not just ask the good Rev. Herself?