We don't truly know 100% But, we do know that the Bethel Church is behind it. You should Google this church. Their beliefs are very controversial and are frequently called a cult.
My un-PC opinion is that this church saw an opportunity for some free national publicity and jumped on the opportunity. They know full well that an abductor will not come forward.
So, because of the church's reputation, I am guessing that this is a PR stunt that isn't connected to the family.
How do you know it is Bethel behind it?