Mark of Satan

I had a hard time keeping focus on this story. Like another person stated in a earlier post all of the uneeded ramblings made it hard for me to focus on the big picture. Harvey was indeed an evil man. Thelma and her daughter while trying to do good were very much nieve to go about preaching the word of G-d without caution.
I think this story tells of two different dilemasin everyday life. One of which people don't seem to realize when they are in the midst of danger. Everywhere around us there are people that are out to hurt and take advantage of us without our knowledge. Thelma was trusting in G-d and the mission that she was on to help save those souls that have been marked by evil, but wasn't aware that that very evil could doom the life of her and her child. Her want and need to spread the word of the Bible and teach Harvey of the love and hope that G-d had for him was her main concern. This blinded her eyes to the true nature of Harvey's hospitality. If it wasn't for the drugged stupidity of her demented host she could have been raped and killed along with her daughter.
The other side can speak for those with strong beliefs and faith in G-d's works. This means that no matter what the danger that finds you, if you have faith in him, speak his words and spread the love and compassion he has for us with others he will see you through all the bad things that come your way. Thelma's mission to make Harvey understand that he too was loved by G-d was all that she was focused on. She believed that if she was passionate enough with her readings from the Bible that the scriptures would speak to his very soul and help him to Love G-d again and have faith.
Although it seemed as though Harvey was going to see his evil plan through, even if he had to crawl after her through the gravel and glass. He realized it wasn't worth it. In the end it seems that Thelma's words though finally made more sense. He at last saw that he was alone in the world with only his evil intentions to keep him company. I believe that this was what ultimately made him ask to be saved.
I wonder though Harvey seemed to finally turn over a new leaf in life would his sister and her anger towards him eventually influence him to turn evil again. What do you think?