Passed away peacefully on June 4th at 60 years old after battling cancer. Significant other of 20 years to Dennis McDonald. Beloved mother of Heidi (Brian) Egner. Cherished sister of Mary (Rick) Holladay, Tim (Peggy) Heiden, and the late Judith Heiden. Further survived by other relatives and friends. A visitation will be held on Monday June 12th at Hartson Funeral Home, 11111 W. Janesville Rd. Hales Corners 53130 from 5 p.m. to 7 p.m. followed by a memorial service at 7 p.m. In lieu of flowers, donations to the Vince Lombardi Cancer Clinic, 36500 Aurora Dr. Summit, WI 53066 in Theresa's memory are appreciated. Burial services will be private.