AUBURN â A DeKalb County man described the wife he strangled as his âsoulmate,â while the womanâs daughter sobbed loudly after questioning why her mother had been killed, during a sentencing hearing Monday in DeKalb Superior Court II. Joseph F. Traster, 55, pleaded guilty to intentionally killing Lisa M. Heiser while acting âunder sudden heatâ in a Waterloo house on Halloween last year. Traster originally faced a charge of murder, but that was amended to a lesser charge of voluntary manslaughter, a Level 2 felony, as part of a plea agreement. Under the terms of the agreement, Judge Monte Brown sentenced Traster to 17 1/2 years in prison, all executed, and no probation.