The mother of a teenager that was shot and killed in July has filed a lawsuit against the man accused of the crime. Jessica Frank has filed a wrongful death lawsuit against 65 year old Matthew Rumbaugh of Mountain Grove. Rumbaugh has been charged with the murder of 15 year old Riley Gerber. He’s also facing first degree murder charges for allegedly killing the teen’s father, 35 year old Chad Gerber. Rumbaugh has pleaded not guilty and is being held without bail in the Laclede County jail.