Katherine Knight is an Australian born terror. Starting from the beginning she had it rough. Her alcoholic father beat her and her mother used her as a confidant. Her brothers sexually exploited her. She grew into a tough woman, who beat her partners. Paranoia plagued her, believing every man was cheating. As she moved through partners her violence grew, until one day it boiled over ending in the death. 

Sources:

Green, Ryan. 2019. Man Eater. The terrifying true story of cannibal killer Katherine Knight

https://www.abc.net.au/news/2020-02-29/katherine-mary-knights-john-price-murder-remembered-20-years-on/12006996

https://www.imdb.com/title/tt5981920/

https://crown.rdhs.org/the-crime-that-rattled-australia-an-overview-of-katherine-knights-gruesome-murder-of-her-boyfriend/

https://opus.lib.uts.edu.au/bitstream/10453/18992/1/2011006119.pdf

https://www.youtube.com/watch?v=sWQHab5pUW4