I have no reason to doubt the verdict because the courtroom was the least bias you could get. And they saw and heard the arguments given. And decided a lesser murder sentencing.
She was charged with manslaughter.
Manslaughter. The unjustifiable, inexcusable, and intentional killing of a human being without deliberation, premeditation, and malice. The unlawful killing of a human being without any deliberation, which may be involuntary, in the commission of a lawful act without due caution and circumspection.
Prosecutors spoke to more than 300 witnesses in their investigation before the evidence was presented and the law was explained to the grand jury.
A murder charge "is intentionally and knowingly committing that act" while manslaughter is a "reckless" action.