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
Don’t worry guys the muderer is actually really nice inside so they don’t have to go to jail
And STOP DIAGNOSING EVERYONE WITH MENTAL HEALTH PROBLEMS! She doesn’t have bipolar, she just has trauma, that’s like the whole point of the movie! This is like when people jump to ADHD when kindergarteners can’t stay still.