Don't go assuming that the boy was awake and conscious to even see her coming when she decided to attack him, let alone defend himself. When a female predator's decided she's going to use violence, especially a malignant narcissist like this woman likely is, she only does so when she believes her chances of success are absolutely guaranteed and her target can do nothing about it. For all we know she could've mixed sleeping pills into her sons dinner meal to ensure he slept hard through his beating. I used to work in a facility for psychotic children. Not a single one of those kids had been abused by men, all of them by their mothers.