Rachel A. Cullen, 40, who was president of the Mothers of North Arlington social and support group in 2003 and volunteered with the city’s Lee Center Cooperative Playgroup, died April 6 at the home of her father and stepmother in Reston.

She had leptomeningeal carcinomatosis, a cancer of the lining of the brain, said her husband, Paul D. Cullen Jr. Mrs. Cullen was an Arlington resident.

Rachel Anne Quadt was born in Fairfax County. She graduated from Thomas Jefferson High School for Science and Technology in Alexandria in 1990 and received a bachelor’s degree in French and psychology from the University of Virginia in 1994.

She was an English tutor with the organization Business Talk France, a customer service representative for Global One long-distance service and a project manager with Biby Engineering and the Acumen Solutions consulting firm. From 2002 to 2004, she counseled teen mothers through the Borromeo Housing community service agency in Arlington.

She belonged to several book clubs in the Arlington area.

Survivors include her husband of 12 years, Paul D. Cullen Jr. of Arlington; three children, Grace A. Cullen, Vera M. Cullen and Peter M. Cullen, all of Arlington; her father and stepmother, Robert Quadt and Jonna Pryor Quadt of Reston; a brother, David Quadt of Ashburn; a stepbrother, John Pryor of Boone, N.C.; and a stepsister, Andrea Williams of Annapolis.

Emily Langer