(Hennepin County, MN)  —  The woman accused of killing her six-year-old son, Eli Hart, is now facing a first-degree murder charge.  Julissa Thaler was already charged with second-degree murder in Hart’s death, and the new charge was added Friday.  The first-degree count would carry a mandatory life sentence without the possibility of release if Thaler is convicted.  Thaler has been offered a plea agreement on the second-degree charge, but hadn’t acted on it before Friday’s indictment.