I think we've all lost out tit from time to time, we are all evolving, learning, parenting is literally a learn on the job situation but if you're having these huge angry outbursts over trivial tit like this then it really is time to seek some external help. I'm not snaking here, im speaking as a an adult who's been in therapy their almost entire adult life to try and undo the damage this sort of parenting did to me. Being screamed at for small things, having your things ripped from you and thrown over fences, it's not a normal 'cranky mum' response and these girls are going to be emotionally scarred from this. She seems to he thriving in her rage, like she's proud of it. Im so sad for those little girls.