Uh, kids are like. Scarily easy to kill. Their bodies are soft and delicate because they haven’t finished developing yet. I mean sure, their more flexible skull is better at absorbing a single blow, but a sustained beating? Repeatedly being hit by an entire grownass adult 4x their size? Kicking and punching recklessly? MC should be dead by now. “I only kicked her a few times” bitch your femur is the thickest and strongest bone in your body surrounded by layers of chunky muscle??? Even with a sedentary lifestyle your size and weight is enough to beat a tiny squishy child to death????
But of course she won’t because then the story would end. Who cares how anatomy works amirite