If my MIL gives me yet another devotional for Christmas....
I will have to explain to her that I will not use it and she can choose to give it to someone who will appreciate it. No matter how politely I state this, it will be considered rudeness, as MIL does not believe in boundaries. If I just accept it, it will be very disturbing and distressing for me, as past experience has shown me.
Update: No devotional this year!! Hooray!!