I love that church. When I was a child we could not reach it and only look at it from the water, the GDR bwanted to demolish it. Nikolskoe on our side of the Havel did put the chime of Sacrow into the church so the chime was still there but it came from our side to the other, not vice versa.
By the way, I forgot to mention years ago, Elisabeth wasn't forced to change her religion, she made it with free will and said to - hm, I don't know this minute and I am far from home so I cannot look into my books but it was someone very high in the catholic church, maybe even the pope- when he asked her why : 'because the best of all men showed me how wonderful an evangelical human is.' But it was said she 'only did act so' but stayed catholic and tried to change her husband nto a catholic too.
Friedrich Wilhelm IV loved the Middle Ages and the catholicism, it was modern in that time as you may know, many people changed their religion back to catholicsm, and he would have done so too but of course couldn't.
He even did let bury his heart in the Mausoleum of Charlottenburg while his body rests in Potsdam, as the catholic Habsburgs used to do but never the evangelical Hohenzollern.