Mary Kay (Markovich) Hintermeyer, age 68 of the Town of Brookfield, WI passed away peacefully on Tuesday, November 11, 2025 with her family at her bedside.

Mary was born April 18, 1957. She was the daughter of Louis and Patricia (Sekulich) Markovich. Mary graduated from West Allis Central in 1975. Mary received her nursing degree from UW-Oshkosh and received her master’s degree in nursing from Marquette University. Mary was a Pediatric Nurse Practitioner at Children’s Hospital for 37 years. A job she loved doing.

Mary was also very active in the Sumadija Serbian Folk Dance in her teenage years. Mary continued to dance the Bulgarian Dance group, Na Lesa of Milwaukee. Mary’s Passion was gardening and landscaping her home.

Mary is preceded in death by her father, Luka and Petra Markovich.

Mary is survived by her husband, Dave, they were married for 37 years and her daughter, Erin (Hintermeyer) Woodstock of Kenosha, WI. Mary was a belove grammy to Olive and Kaiya. Survived by her sisters, Jennie (Markovich) Bosmans and Susie Markovich, also survived by numerous nieces and nephews.

A Celebration of Life will be held from 10:30AM-12:00PM Noon Wednesday, November 19, 2025 at the Rhiel Funeral Home in Durand, WI, 615 12^th Ave E. Burial will follow in the Rock Falls Cemetery, Rock Falls, Wisconsin.

Rhiel Funeral Home & Cremation Services, Durand, is serving the family.

Condolences

1. Laura Sage November 22, 2025, at 8:19am

   Mary and I danced together for many years, first at the dance studio and then in my fitness dance classes. I am so grateful for the connection that we had and the years of coming together to share in the love of dance and supporting each other in our friendship. She was a kind and deeply caring person and will be greatly missed.

2. Gary & Deb Stone November 20, 2025, at 8:24pm

   So sorry Dave for your loss. Sending thoughts and prayers for you and your family.

3. Marsha Malloy November 20, 2025, at 7:28pm

   Mary was a hallmark of the Medical College of Wisconsin and Children's Wisconsin Allergy and Immunology Program/Clinic . Her ever-cheerful and helpful personality fostered collegiality, advanced education and facilitated MANY advancements and improvements in outcomes for the patients and the education of medical personnel over the 37 years of her career at MCW/CW.

   Mary will be sorely missed by all who had the pleasure of knowing her. May her family be comforted by their many fond memories of her-- that they hold on to-- as do we, her coworkers.

4. Lee Grippen November 19, 2025, at 8:43am

   My Sympathy to David and the Hintermeyer family..

5. Mary Bausch-Jurken November 18, 2025, at 4:57pm

   Mary was an incredible colleague and friend. I learned so much working with with her at CHW and respected her immensely. I also enjoyed her company outside of work and valued our friendship. My condolences to her family.

6. Matt Tallar MD November 18, 2025, at 3:27pm

   Mary was instrumental in may training as a future allergist. She was an amazing resource and a wonderful person. I am glad to have crossed paths with Mary in this life. She is greatly missed.

7. Rosan Prissel November 18, 2025, at 12:59pm

   Deepest to the family.

8. Sara Lowe November 17, 2025, at 10:06pm

   My deepest condolences to Mary's loved ones. Mary was a wonderful colleague and taught me so much about caring for patients and career growth at Children's Wisconsin. her patients and the families she served continue to reflect on the wonderful care Mary provided. May you rest in peace, Mary. May your family and friends find comfort in their memories of time with you.

9. Vera Potkonjak November 17, 2025, at 8:43pm

   Our deepest condolences to Mary Kay's husband Dave, daughter Erin, grandkids, sister's Jenny and Susie, along with all the extended family. I remember Mary Kay from little kids in Sunday school to our teen days of kolo dancing to being lucky enough to see her this past summer and chatting. As always she had that famous smile that I will always remember. May your memory be eternal.????

10. Barb Kutz November 17, 2025, at 3:27pm

    Dear Dave, Erin, Jenny, and Sue and your entire extended family. I am so very sorry to hear this sad news. Mary Kay has been a dear friend of mine for 53 years. Just saw her for dinner with another high school friend Sept 30th. I met Mary Kay our Sophomore year in high school. We were on Poms together, we stayed in touch after high school, I knew her mom well, decades of memories. It's so heartbreaking. My thoughts and prayers go out to all of you and during this difficult time and in the days to come. She was such a bright light in all of our lives. She is now a bright star shining with the Angels. I'm sure she is up there teaching all of them a dance step or two. God Bless all of you! ~Barb (Kroll) Kutz

11. Betsy Roth-Wojcicki November 17, 2025, at 2:24pm

    Sending my condolences to the Hinterneyer family. Mary was a wonderful, compassionate colleague who shared her expertise with countless patients, nursing/ medical students as well as fellow colleagues throughout her career at Children’s Wisconsin.

12. Cory November 15, 2025, at 11:09pm

    So sorry for your loss.

13. IVEKICH BOZIDAR November 15, 2025, at 10:14am

    My sincere condolences to the Hintermeyer family, Jenny and Susie. I am deeply saddened by the passing of Mary Kay. I was so lucky to have her dancing right next to me in Sumadija. She was always smiling, while keeping me in line. We had fun. May God Rest Her Soul and Memory Eternal.

14. Helen Popovich Mandich November 15, 2025, at 9:15am

    Deepest condolences to the family at the loss of +Mary Kay. We were friends as teenagers as part of the Sumadija Serbian folk dance ensemble. Sending love and comfort to her husband, daughter,Jennie, Susie, and other loved ones. May her memory be eternal.

15. Bee Kovcic Collins November 15, 2025, at 12:22am

    It is with a sad heart I sending my sincere condolences to Mary Kay’s husband, daughter n grandchildren, along with her sisters Jenny n Susie. RIP my Sweet Beautiful Serbian Friend, you will always be part of the Kovcic Family .

16. Ken & Jacqi Lierman November 14, 2025, at 7:44pm

    Dave and family, we were so saddened by the news of Mary's passing. We pray the peace of Christ meets you in your sorrow and stirs up the most joyful of memories of you life together. Praying blessings for all of you.

17. Jovo (Joey) Potkonjak November 14, 2025, at 5:52pm

    The Markovich girls had/have the best smiles. I’m very happy that I was able to reconnect with Mary Kay over the past few years again through folklore. The best thing about friendships is that time doesn’t matter. Even after 25 years you continue on where you left off. Mary Kay will be missed by many in her Serbian community. My deepest sympathies to Mary Kay’s entire extended family. May her memory be eternal.

18. Allyson Dehn November 14, 2025, at 4:04pm

    I worked with Mary for several years and absolutely loved her. Such an intelligent, kind, beautiful woman. A huge asset to the nursing community. She will be terribly missed.

19. Candy November 14, 2025, at 12:06pm

    So sorry to hear about your loss David. Prayers to your family.

20. Linda and Steve Talford November 14, 2025, at 10:36am

    Deepest sympathy to the Hintermeyer family.
    Steve and Linda Talford and family

21. Nenka Kovcic November 14, 2025, at 10:20am

    MaryKay was a dear and cherished friend. We were in the Sumadija Serbian Folk Dance group. I will cherish fond memories of all my time with MaryKay. Sending love to Jenny and Susie for the loss of a beloved sister.

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