The only alternatives I can imagine working would be those *connected* to the church. Do they have some kind of nursery? Can the teen help out? (Not all of us will sleep, but all of us will be changed.) That reassures the mom that the teen isn't just being lazy and wanting to sleep in on Sunday. It reassures the mom and her church friends that the mom is being properly diligent and not letting her teen slack off.

But less interested in going isn't "flinches from it," and it may only be for another 6 months.