It's very likely that this church has taken Casey on as their special little "mission" ~ their project of benevolence of God's love and forgiveness. Providing "sanctuary" for her to "grow" in His love, she wouldn't be expected to be held to the same rules as the members of the church.
I'm just guessing, of course, but I imagine that is how it would have been presented to any/all church members who had knowledge of her presence. Any outside criticism would be considered as coming from an evil society and they would consider themselves martyrs for their cause. Should they reap any monetary benefits along the way, they will only be considered blessings that confirm their cause.
As our astute cyberborg stated, this appears to be a closed community and therein lies the danger.
:cow: