ARDITTI, RITA of Cambridge, formerly of Buenos Aires, Argentina. Died December 25,2009 at age 75 after living with metastatic breast cancer for over 30 years. Partner of Estelle Disch of Cambridge. Mother of Federico Muchnik of Watertown. Mother-in-law of Naima Benali of Cambridge. Grandmother of Layla Muchnik Benali of Cambridge. Sister of Alicia Arditti and Edith Benveniste of Buenos Aires, Argentina. Deeply loved by all. Burial will be private. Donations in Rita's memory will be welcomed by Breast Cancer Action, 55 New Montgomery St. Suite 323, San Francisco, CA 94105 or the Metastatic Breast Cancer Network, PO Box 1449,NY, NY 10159.