Greensburg, PA —A Pennsylvania woman will possibly do prison time for serving beer to teens at her son’s high school graduation party.  Three of the teens who were at the party were killed in a DUI car crash after leaving the party.  Susan Sanders-Watt, 60, pleaded guilty to four counts of corruption of minors and reckless endangerment and 17 citations of serving alcohol to minors. Her sentencing will occur in about three months. The incident occurred on June 26, 2010.  Michael Simpson, 19, the driver of the car, and two passengers, Carly Kudray, 18, and Jordan Cobb, 19, were all killed.  Third passenger was injured, but has since recovered.  Simpson was legally drunk at the time of the accident. All of the teens were graduates of Greensburg-Salem High School.