Argh, I will respond to the rest of these awesome comments later, but yeah, the thing that surprises me most in this whole thing is that you are saying FW objected to predestination? How is that even possible, as a good Protestant? :)

But yeah, I seem to remember that my reading was that Wilhelmine kind of hit on it as a method to protest about the whole marriage thing to SD in a way SD and FW couldn't object to; I didn't get the impression she was super committed to it. And is SD really going to tell FW that Wilhelmine is using a method he might not approve of to get out of promising to adhere to a marriage he is totally against? (SD seems to undermine herself sometimes, so maybe? but I can see Wilhelmine taking that gamble.) But I should go back and look when I have time.

Sonsine swears that she reads a bit of the bible to Wilhelmine each morning right after breakfeast while Wilhelmine is doing womanly needlework with her ladies-in-waiting. This, err, is not quite how Wilhelmine describes her days to Fritz

I have a very good impression of Sonsine from the memoirs <3 Haha, I can imagine that Sonsine did that... for about five minutes. Then she can swear to it and Wilhelmine can go off and do her music and gardens. :D