(Christiansburg)- A former Virginia Tech student is heading to prison for helping plan the murder of a Blacksburg teen. A Montgomery County Circuit Court Judge sentenced Natalie Keepers to 40 years yesterday. Co-defendant David Eisenhauer has already been found guilty in the stabbing death of 13-year-old Nicole Lovell, who he met online. Police said Keepers admitted to helping Eisenhauer plan the killing and went with him to hide the body in 2016.