Diane M. McNiff, age 75, a long resident Yonkers died Friday, December 31, 2021. Diane was born July 23, 1946 the daughter of the late Joseph and Laura (Santini) Manfredi. She graduated from Seton Academy and Elizabeth Seton High School. Diane was a graduate of the College of Mount Saint Vincent, class of 1967. She was a longtime employee of New York Life Insurance Company. When she retired from NY Life she worked for several years as both a pre-k teacher's aide and as a pre-k teacher at St. Barnabas school. Diane is survived by her two children Shannon McNiff Diaz and Brian McNiff, as well as her beloved granddaughter Julie Diaz and her two brothers Joseph Manfredi and Paul Manfredi. Friends may call on Wednesday from 4PM to 8PM at Sinatra Memorial Home, Inc., 499 Yonkers Ave., Yonkers, NY. The funeral will be Thursday at 10:45 at St. Barnabas Church, 409 E. 241st Street, Bronx. Interment will be in St. Joseph Cemetery, Yonkers. In lieu of flowers contributions may be made to Sloan Kettering memorial Hospital in her name.