I may have a few clues to offer you on this Elisabeth Tesch. I do know that Adam Tesch(?-?) and his brother, Heinrich Peter Tesch(1733-?) arrived in America October 23, 1752 aboard the "Bawley". Heinrich later settled in NC circa 1771, but Adam stayed in PA as far as I know. I do not have the spouse of Adam or any other info except that his parents were Johann Peter Tesch(1684-1753) and Maria Elisabetha Muller(1685-1753).
Now, Johnann & Maria both died in Kulz, Germany, but note Maria's maiden name; Muller. This was another form of Miller. Usually when families traveled, they traveled with family or close friends. Abraham Miller could possibly be some relation to Elisabeth Tesch. I am sure that Johann & Maria had other children, but I would research Adam Tesch. Adam may have died before his brother migrated to NC in 1771.