It's been a while since I read it, so I can be wrong. But Pina ending was more brutal in the book.
At first, she was sentenced to death, but Remi plead for her, she then officially sends to labor instead. Her tongue was cut, and she wasn't particularly guarded either, a lot of prisoners are people who got scammed by her, so she quickly became a target of frustration.
Rape, torture, and heal just enough to not die is her new casual day. There were excellent healers put in place to take care of her and make sure whatever the prisoner did, she won't die. She was burned, disfigured and more, but she is still the only woman the prisoners can get, so it continues.
I guess that was too hardcore to show in the manga