Mary Louise Shank Mueller, age 84 of Lancaster, PA, passed away at her home on November 16, 2025. She is a graduate of Lancaster Catholic High School and worked at Phillips Financial Services, Mountville, PA for 39 years until her recent retirement. Mary was a devoted mother, spouse and grandparent. She was an avid reader and devoted to her faith and valued all efforts of kindness, big and small.

She is survived by her sons: Kevin C. Shank (Husband of Tracey) of Lakewood Ranch, FL., Jeffrey S. Shank, (Husband of Lisa) of Elizabethtown, PA, and Brian C. Shank (Husband of Joni) of Wrightsville, PA; grandchildren: Amanda, Caitlin, Emily, Jennifer, Thomas, David, Christopher, Jillian and Brenden; a greatgrandchild Rhys; 2 brothers: Charles F. Haldeman (Husband of Phyllis), Sheridan, IN and Joseph G. Haldeman (Husband of Cathy), Lancaster, PA; 2 sisters: Kathryn R. Clough (Wife of Dana, deceased), Philadelphia, PA and Dorothy A. Greer (Wife of James), Lancaster, PA, and numerous nieces and nephews.

In addition to her parents, Charles and Rosemary Haldeman, Mary is preceded in death by her first husband of 32 years, Ronald G. Shank, and husband Carl W.P. Mueller to whom she was married for nearly 26 years until his passing in 2022.

A Mass of Christian Burial will be celebrated by Reverend Thomas Kappes Saturday, November 22, 2025, at St. Leo the Great Catholic Church, 2427 Marietta Ave, Lancaster, PA 17601 at 11:00 AM, with visitation being held one hour prior to Mass. Interment to follow at St. Anthony's Catholic Cemetery.

In lieu of flowers, donations may be made to Lancaster Catholic High School, 650 Juliette Ave., Lancaster, PA 17601.