

Diane Louise Siwek (nee Tortorelli), born August 29th, 1952 in Chicago, Illinois, passed away on September 28, 2021 while fighting a nearly six-year long, courageous battle against ovarian and colon cancer.
While the strength she showed in battling a terrible disease was nothing less than superhuman, her legacy to those closest to her will be her loving and nurturing heart.
Beloved mother of Edward (Colleen) Siwek, Daniel (Katie) Siwek, and Nicholas Siwek. Loving companion of Ron Willis. Devoted grandmother of Emily, Caylee, and Emma. Second mother to Jason (Nikki) Willis, David Willis, Steve (Erin) Willis, and Meghan (Antony) Manzella; second grandmother to Ryne, Emma, Easton, Mae, Camden, A.J., Reese, and Daniella.
Favorite sister of Thomas Tortorelli (deceased), James Tortorelli (deceased), Charles Tortorelli, and Robert (Susan) Tortorelli. Loving aunt of Susan, Megan, Elizabeth, Mallory, Michael, and Krista (deceased).
Diane was predeceased by her parents Louise Zastawny (nee Kopp) and Arthur Tortorelli.
A visitation will take place on Tuesday, October 5th, from 3:00 pm to 8:00 pm at Andrew J. McGann and Son Funeral Home, 10727 S. Pulaski Rd. Chicago IL, 60655. Prayers will take place at 9:00 am on Wednesday, October 6th at the funeral home, proceeding to St. Christina Catholic Church for a Mass of Christian Burial at 9:30 am, 11005 S. Homan Ave. Chicago, IL. Interment Resurrection Cemetery, Justice, IL.
In lieu of flowers, donations would be appreciated to St. Jude Children’s Research Hospital. www.stjude.org
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