Legal advice on residual debt after selling an apartment

Questioner

My ex and I bought an apartment 10 years ago, and have been separated for over 7 years now. The apartment has been for sale all that time, and now it has finally been sold with a residual debt of 7 thousand euros. I paid the mortgage myself for 7 years, including all the associated costs. Now I am curious whether, in addition to half of the residual debt (50/50 division), she also has to pay half of the mortgage for all those years, and how I should handle that, I am not looking forward to her obstructing so much that the house cannot be sold in the end, because she will not agree, even though she has indicated in writing that she will do so, but cannot yet pay the residual debt, so I will do that now, and hopefully get it back from her later.

Lawyer

The costs of repayment and major maintenance will have to be borne jointly. Interest charges and usage costs will reasonably remain for the account of the party that has had the apartment in use. It is advisable that you record everything properly and possibly also make agreements about how and when you can claim the share that you may have paid too much from your ex.