If they are Christians, maybe you can tell them you are visiting God when you do it. The danger in that would be if they go around
telling people their beloved daugther is some kind of saint or visionary.
How old are you? Is moving out an option?
They sound very rigid. If it was me, I would really pose a question to them about the validity and realness of the world they live in.
Like " And how can you be sure of the realness of your reality?". Maybe it is a little to harsh.