She did freeze her own kingdom, many people were suffering, she tried to murder guards who wanted to bring her down and eventually basically murdered Anna in an anger by freezing her heart. The woman has obvious anger problems and is dangerous to her surrounding. It was a right decision to jail her so she can’t hurt anyone else
I blame the parents. They instilled all these neuroses in her because they didn’t understand and feared her. All the things you listed are the symptoms of the fact that her parents were crap. But I applaud your unpopular opinion.