Mother was cruel, unfeeling, and murderous towards humans. She ruthlessly controlled dozens of Demon Slayers through her threads and manipulated them into killing each other. She's rather sadistic and callous, uncaring that her manipulation brought them continous suffering. Despite this, spending time with her "family" caused her developed an intense fear for her "son", Rui, and her "husband", both had abused her for being weak. This abuse was severe enough to make her want death