On Monday, March 15, 2010, Elaine Hamilton O'Neal died in Woodstock, Maryland due to unknown causes. She stopped painting around 2004, due to eye problems, but otherwise remained in good health. In her latter years, she was involved in her community, through her membership in the Great Patapsco Community Association, as well as the local art museum. She was a regular supporter of Baltimore's Walters Art Museum, where her brother Douglas serves as Vice-President of the 2009–2010 Board of Trustees. The Walters Art Museum in Baltimore, Maryland is one of the finest small, privately formed art collections open to the public in the United States.