Diana Lynn (Stewart) DeMasso, 68, of Moon Township, passed on November 12th, 2025 in Harmony at Diamond Ridge in Moon Township. She was born in McKees Rocks on February 25th, 1957, a daughter of Betty Jane (Bruno) Stewart and the late William C. Stewart. In addition to her mother, she is survived by her sister, Maureen Luzik (Brian), her nieces, Alaina MacFarlane (Patrick), Kirsten Barton (Jeremy), her nephew, Brent Luzik (Madison), her great nieces & nephews, Vivian & Carina MacFarlane, Boyd Barton and Brooks Luzik, her special friend and bonus sister, Maureen Heilmann (Bud) and their son, Nick. In addition to her father, Diana was preceded in death by her husband David DeMasso in 2007.

Diana worked at Ohio Valley Hospital for over 42 years in the Respiratory Care & Sleep Center. She had a special love for dogs and was a strong advocate for pet adoptions. She volunteered at Animal Friends for over 10 years.

Friends will be received on Friday, November 14th from 2-4 P.M. & 6-8 P.M. in The Huntsman Funeral Home & Cremation Services of Moon Township, 1522 Coraopolis Heights Road, Moon Township. Please meet at the funeral home on Saturday, November 15th at 10 A.M. Committal and entombment will follow at Resurrection Cemetery, 100 Resurrection Road, Coraopolis.

Memorial contributions can be made to Animal Friends, at www.thinkingoutsidethecage.org.