Andreas left Zoe in the dungeon cell for an entire 24 hour period. It was horrifying.
At first, she thought perhaps Andreas didn't know where she had gotten herself lost to. In that case, it would only be a matter of time until he learned from Kai that she had gone to investigate the map event and gotten herself into trouble. He would be down anytime to free her. Or he would send someone, and then she could return to her isolated but comfortable life.
Eventually it became clear to her that that wasn't the case at all. Either he didn't care enough to even notice that she was gone, or he did notice she was gone and didn't care enough to come and retrieve her. Or he was punishing her.
What had she done to deserve this treatment? All she ever did was what he asked.