If her parents were disciplining her better at home she would not be acting like this. I am speechless at this childs behaviour she sounds like a complete and utter psycho brat and i hope she learnt a BIG lesson. Learn it better at 6 then at 16 and end up in juvi-NEVER ok to go crazy, be violent and distroy others property PERIOD. By 6 she should know this already.
Sounds like she was a danger to herself and others around her and if you can't reason with a crazy person, make sure they can't harm themselves and others