The details are in the story. "child abuse resulting in death by NEGLIGENCE".

Negligence has s strict legal meaning, which must be proven beyond a reasonable doubt.

"A failure to behave with the level of care that someone of ordinary prudence would have exercised under the same circumstances. The behavior usually consists of actions, but can also consist of omissions when there is some duty to act (e.g., a duty to help victims of one's previous conduct)."

In other words, NOT an accident.