What a strange comment. This is how our exchange was after I told her I need her to change address -
Sent October 16, 2020
W: why do I have to change address now?
Me: Because that is why I´m paying you this money. In the agreement I wrote that you will get that money if you don´t claim the apartment. By changing your address with the tax office you are giving up your right to do so.
W: Is that allowed? Should we not wait until after these 5 months are up?
Me: It´s actually not allowed what you are doing now. You are required by law to change your address with the tax office if you don´t live here anymore.
W: Ah okey, I´ll do that now then
Thank you, yes I got what I wanted. And I have absolutely no regrets. My courts will most certainly not have any issues with how I handled this. Even if she wasn´t informed of the consequences there wouldn´t have been any problems for me. Things work different here. It is her responsibility to find out what her rights are here. But that said, as you can see, she was well informed before agreeing to change her address.