Deborah 13: servant of God

im watching this documentary on bbc about a thirteen year old girl who is going to go out into the world and spread her beliefs to a wider audience. I haven't gotten to the part of how she is doing this, but they are making it seem like she will be leaving her family, which seems rather wrong. However, what i find interesting that such a devout evangelical girl, who wants to save the world, obviously has a gay brother. Just a random thought...