Is my supervisor wrong?

I am a school bus attendant and my driver was having in appropriate conversations with me on the bus while children were on the bus about religion and abortions and that at one point when he first got baptized he felt that all people that weren't Christian needed to die. There where so many things that he said on that bus that made me feel uncomfortable and that might cause me my job. I did tell him on 2 occasions not to have conversation with me while children are on the bus. I went to my safety supervisor and told her. I also told her that I was uncomfortable table working with him on the bus and request to be removed from the route, she told me that it I am refusing to work. I was refusing I just wanted to be remove from that particular route. She watch the tape on the bus and told him that I was uncomfortable with him talking about God with and he then confront me and then I still have to get on the bus with him. He then started to write a note to me saying that he is not mad at me he just wanted to know what I told them I was so uncomfortable I dont want to go back to work. He also said he wanted he wanted to have a private conversation with me. What should I do and is the supervisor wrong for letting him know it was me. And is she wrong for putting me back on that route with him