Helen M. Twohig (McDonough) age 75 formerly of Brockton and Plymouth of Naples, FL passed away October 19th at her sister’s home surrounded by her loving family. Born and raised in Dorchester, she graduated from St. Gregory High School. She was the Administrator of Professional Billing at Mass General Hospital for 38 years retiring in 1985. She loved spending time with her siblings and nieces and nephews. Beloved wife of William L. Stepmother of William L. Twohig, Jr. of Weymouth. Sister of Edward J. McDonough of Braintree, Betty DiGirolamo and her husband Rocco of Canton, Thomas M. McDonough of Scituate and John L. McDonough and his wife Mary of Quincy. Also survived by many nieces and nephews. Visiting hours at the Dockray & Thomas Funeral Home 455 Washington St. Canton Tuesday (4-8 pm). Funeral mass at St. John the Evangelist Church Canton Wednesday morning at 10:30. Burial private. In lieu of flowers, donations may be made in her memory to the Juvenile Diabetes Research Fund 60 Walnut St. Wellesley, MA 02481.