Colleen “Coke” A. Sisler, 76, of Dubuque, Iowa, passed away on February 22, 2025.

Committal prayers will be held at 11:00 a.m. on Saturday March 8, 2025, at Mount Olivet Cemetery’s chapel.  Leonard Funeral Home & Crematory, 2595 Rockdale Road, is assisting the family.

Colleen was born on December 5, 1948, in Dubuque, Iowa, the daughter of Arnold and Joan M. (Dougherty) Sisler.  She worked at MercyOne in Dubuque as the Admissions Coordinator for 30+ years. Coke was one of those beautiful, kind hearted, nurturing souls that few have the privilege of experiencing in a lifetime.  Always one to seize every opportunity and adventure; her free and infectious spirit allowed countless travels, endless hours of card playing and unmeasurable amounts of memories with friends and family who she loved more than anything in this world.  She truly lived life to its fullest.  She was humble to her roots, thoughtful to her core and leaves the most monumental void in so many lives left here earthside.  The unbearable pain that her absence casts is eased in the ever slightest by the infinite gifts she gave to this world with her presence and selflessness.  She would want us to be strong, and remember her with happy thoughts filled with love.

She is survived by her brother William Sisler, and his family Michie (Dwight), Caitrin and Caraline Turner, William Jr. (Gretchen), Declan, and Alexis Sisler, brother Jeff Sisler, and his family Dawn (Chris), Lexi and Max Streets, and Destiny Sisler, brother Charles (Roxane) Sisler, and their family Nicholas (Kari) Owen, Cameron, Mason and Jaxson Sisler, Brandon (Hailey Julson) Sisler, Amanda (Kyle), Mia, Kya, Kip and Koy Bergfeld, sister Laura (Mike) McNamer, and their family Shannon (CJ), Colton, Lochlan, Caden and Bristol Yager, Shane(Amanda), Audrey and Nolan McNamer, and her significant other of 30 years, James Stackis.

She was preceded in death by her father Arnold Sisler, her mother Joan Sisler, sister Peggy Sisler, sister-in-law Char Sisler, and sister-in-law Pam Sisler.

In lieu of flowers, a Colleen Sisler Memorial has been established.

The family would like give a special thanks to the MercyOne Emergency doctors and staff, the EMT team that cared for Colleen, the Air Care team for their response, and Donna and Mike Fuller for all of their amazing care of Colleen.