Judgement of parenting from a single event is arbitrary at best and criminal at worst. Child Protection Services investigated my mother and accused her of burni

Judgement of parenting from a single event is arbitrary at best and criminal at worst. Child Protection Services investigated my mother and accused her of burning me with a cigarette (it was a mosquito bite, I'm allergic to their anticoagulant) but years later turned me in to her custody, told me 'back in my day' stories and treated me as a trouble making 'runaway' after witnesses described her physically attacking me with punches, threatening me with a handgun, and swinging a stoneware coffee mug at my head. My great grandmother however was kind, had 14 kids, 7 survived. That was farm life then... I wonder how she'd have been judged today? Investigated for abuse, neglect, or murder? My mother's A-OK though apparently. We don't speak.