CASASSA. Heidi S. (Schulz) of Cambridge, passed on December 24, 2018 at the age of 57. Beloved wife of Allan Charles Casassa. Loving daughter of Gunter and Lois Schulz of Holliston, MA. Dear sister of Steven Schulz of Heath Springs, SC and Susan Davis and her husband John of Falmouth, MA. Heidi dedicated 35 years to nursing services, currently Radiation Oncology, at Beth Israel Deaconess Medical Center. A Memorial Service in conjunction with her mother Lois' memorial will be held at the Keefe Funeral Home, 5 Chestnut St., Arlington, on Saturday April 6th, 2019 from 1-4 pm. Relatives and friends invited. In lieu of flowers, memorial contributions may be made to the Stanley R. Tippett Hospice Home, 920 South Street, Needham MA, 02492. For online condolences please visit www.keefefuneralhome.com.