Bettencourt, Rita Maria (da Costa) of Somerville, January 27, 2019 at age 97. Devoted wife of the late Vital Bettencourt da Silva Vaz. Loving mother of Mario Bettencourt and his wife Paula Mota, and the late Victor da Silva and Carolina da Silva. Cherished grandmother of Alexandra Bettencourt and Alexander da Silva. Adored great-grandmother of Victor and Miles. Beloved sister of Teresinha, Raul and the late Leodina, Gilberto, Mario, Luis, Alberto and Maria. Also survived by many nieces, nephews, other loving relatives and friends.   Funeral from the Rogers & Hutchins Funeral Home, 292 Massachusetts Avenue, in Arlington on Wednesday, January 30, 2019 at 9:00 am. Funeral mass at St. Agnes Church, 51 Medford St., in Arlington at 10:00 am. Visiting hours at the funeral home on Tuesday, January 29, 2019 from 6:00 to 8:00 pm.