Blackbear19 of course I don’t. I believe she was physically abused either by her fellow inmates or the police officers. I’m not saying the policing methods during the interviews were correct (I believe she was also interviewed without a lawyer) and of course if it was the police officers who did that to her, that’s just completely unacceptable.
But is she innocent from killing Joana? No, she is not, and there is evidence apart from her confession. If they wanted to find someone innocent to pin the murder on, they already had the uncle for that.