A teenager who killed a grandmother in a brutal fashion will spend at least 25 years in prison. The New Orleans media outlet NOLA.com, the website of the New Orleans Times-Picayune, reported that a jury found 18-year-old John Honore guilty of second-degree murder over his involvement in a botched carjacking of 73-year-old Linda Frickey, a mother of two and grandmother of three. During sentencing Friday, Honore was handed a life sentence with the possibility of parole after 25 years. Shocking video footage of the incident showed Honore, aided by girls, beating Frickey to remove her from the veh…