We won't always have every fact or detail in every murder case. Most murderers try to get away with their crimes and not disclose them. With that said we can't be a society that lets people off because we weren't there to witness the murder. We need to do a better job than to talk ourselves out of the truth. Love from a mother to a child is consistent no matter color, ethnicity, age or time in history.
Take a look at an ancient text describing the pain a mother feels when she loses her child: Jer. 31:15..."This is what the LORD says: "A voice is heard in Ramah, mourning and great weeping, Rachel weeping for her children and refusing to be comforted, because her children are no more."
Our justice system truly failed this child and you're right it doesn't matter anymore.