Toni M. Dornseif, 61, of St. Peters, Missouri, passed away peacefully on May 29, 2026, surrounded by family and under the care of her husband of 40 years, Dan. Toni was born on July 28, 1964, in St. Louis, Missouri, to Donald and JoAnn Sample.

Toni’s life centered around her family, especially her grandchildren, who brought her tremendous joy and purpose. She cherished time spent together and was intentional about creating meaningful moments, from planning family vacations to organizing camping trips, road trips, and relaxing cabin weekends. Her home was a place of gathering, laughter, and connection, where she prioritized quality family time and cherished countless friendships.

She had a deep passion for food and hospitality, which showed in every meal she prepared and every gathering she hosted. Toni loved baking and cooking delicious meals, often spending hours testing new recipes—one of her favorite hobbies. She enjoyed following food bloggers and discovering unique restaurants, always eager to share great food experiences with those she loved. Whether entertaining in her kitchen or hosting family get-togethers, she created a warm, welcoming environment that made everyone feel at home.

Toni also found joy in life’s simple pleasures and seasonal traditions. She delighted in creating beautiful front-porch arrangements, decorating her home to reflect each holiday and season, and savoring moments over a good cup of coffee in cozy coffee shops. She enjoyed winery outings and fall weather, and she adored her many basset hounds.

Throughout her 40-year career as a frontline healthcare worker and medical office manager, she was admired by her patients and colleagues. She consistently reminded her children of the importance of maintaining a healthy work-life balance.

Above all, Toni was a servant leader who was deeply involved in her church, ministry work, and numerous Bible studies and women’s life groups throughout the years. She was a warrior for love and a champion of diversity, equity, and inclusion. She embraced others with an open heart and welcomed people from all walks of life.

Toni is survived by her husband, Daniel W. Dornseif; her children, Alexis Roepe (Kevin) and Daniel O. Dornseif (Christopher Sledd); her two granddaughters, Lillian and Hattie; and her dear sister, Robin Hicks (Charles). She was preceded in death by her parents; her sister, Tracey Kay; and her brother, Mark.

In lieu of flowers, memorial contributions may be made to Pedal the Cause to support ongoing cancer research at Siteman Cancer Center and Siteman Kids at St. Louis Children’s Hospital.A Celebration of Life will be held on Saturday, August 29, 2026, at Christ Church Cathedral, 1210 Locust Street. Visitation will begin at 9:30 a.m., followed by the service at 11:00 a.m.

The family would like to extend a special thank-you to her entire healthcare team at Siteman Cancer Center, who so gracefully cared for Toni, and to her anonymous stem cell donor for their selfless act.