Equal Justice Under the Law

How is justice equal when a mother forgets her child and the child dies and no charges are brought against her and another mother forgets her child, the child suffers no harm but she is charged with child endangerment and other charges and given jail time.

How does a prosecutor bring charges against the latter mother in light of the fact that he didn't bring charges against the former. How does that happen. What can the public do to ensure equal justice. First we get rid of the prosecutor who made such a blunder.

It seems to me that the prosecutor has given up the right to prosecute anyone for child endangerment who's child has suffered no harm when he has allowed justice not to have been brought against one who's child has died, because of true endangerment, "she forgot", bullshit.