Friends Remember Slain Missionary. Snippet: ... Bonnie D. Penner, 31, died when a gunman fired three bullets into her head Thursday at the Unity Center, which houses a Christian chapel and the clinic where Penner worked as a nurse, providing medical care and help to local people and Palestinian refugees. ... She met Witherall while attending Moody Bible College in Chicago from 1993 to 1996. She earned a degree in international ministries from the school by correspondence in 2000. ...