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925 S 27th Street
Phone: 406-245-6427
Fax: 406-259-3558
Bonnie Sedlacek

Bonnie Louise Sedlacek (Blankenbaker)

Saturday, August 19th, 1950 - Friday, May 17th, 2019
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Bonnie Louise Sedlacek, 68, returned to her Heavenly Father on May 17, 2019.

Bonnie was born, August 19, 1950 to Ralph and Marjorie Blankenbaker. She grew up in her childhood home out on 66th Street West. She was a country girl who loved being outdoors and playing with her siblings, Alice, Charlie and Donna. Bonnie attended Baseline School (a small country school on the westend of Billings) and Billings West High School. She was involved in 4H, track and the Methodist Youth Group.

After high school, Bonnie moved to Denver to attend school for Fashion Design. While in Denver, she met Rick Sedlacek. The two were married on November 25, 1972. Two years later they began their family; Peter William (1974), Dylan James (1977) and Daniel Michael (1978). Moving between the Sedlacek Farm in Nebraska and Billings, Montana, Bonnie stayed home to raise the boys, doing odd jobs on the side. Once the boys were older, she worked for Montana Silversmiths, real estate, and then later moved into family services and childcare.

Bonnie enjoyed many hobbies including scrapbooking, stained glass work, and photography. She took photography classes and had award-winning photos. She loved camping and being in the mountains.

Bonnie’s most cherished role was being Grandma Bonnie. She was blessed with six wonderful grandchildren; Haley (2002), Miley (2006), Jacob (2006), Grace (2008), Zachary (2010) and Nicole (2012). Bonnie loved being with her grandkids. She planned special play dates and sleepovers with each one. She planned activities and events so the cousins could bond with one another. She held Cousins’ Camp each summer over her birthday, creating memories for the kids. She attended many soccer, football, baseball games; school plays and musical programs; and any event the grandkids were a part of. Grandma Bonnie was always there with a smile on her face, cheering the grandkids on.

On January 28, 2019, Bonnie was diagnosed with a glioblastoma (brain cancer) and had surgery to remove the tumor. We knew this was not a cure but we were able to spend 3 1/2 more months with her. On May 14th, we discovered she had blood clots in her legs, lungs and heart. We decided to bring her home to spend her last days with family. While she was never suffering from pain, we are thankful that she was able to pass before the suffering began.

Bonnie was preceded in death by her father, Ralph Blankenbaker, and her sister, Linda. She is survived by her husband, Rick; her sons , Peter (Becca), Dylan (Lindsay), Daniel; her grandchildren, Haley, Miley, Jacob, Grace, Zachary, Nicole; her mother, Marjorie; her siblings, Alice (Richard), Charlie (Barb), Donna (Dan); and many extended family.

We are so blessed to have had Bonnie as our daughter, sister, wife, mother, mother-in-law, and grandmother. She was so kind and loving to all that knew her. She will forever be loved and cherished by her family and grandchildren. We will always remember and love you, Grandma Bonnie! Until we see you again...
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Service Details

  • Visitation

    Tuesday, May 21st, 2019 | 10:00am - 7:00pm
    Tuesday, May 21st, 2019 10:00am - 7:00pm
    Smith West Chapel
    304 34th Street West
    BILLINGS, MT 59102
    Get Directions: View Map | Text | Email
  • Service

    Wednesday, May 22nd, 2019 | 11:00am
    Wednesday, May 22nd, 2019 11:00am
    Smith West Chapel
    304 34th Street West
    BILLINGS, MT 59102
    Get Directions: View Map | Text | Email
  • Interment

    Sunset Memorial Gardens
    1721 Central Ave
    BILLINGS, MT 59102
    Get Directions: View Map | Text | Email


We encourage you to share your most beloved memories of Bonnie here, so that the family and other loved ones can always see it. You can upload cherished photographs, or share your favorite stories, and can even comment on those shared by others.

Private Condolence
Plant a Tree in Memory of Bonnie
1 tree has been planted in memory of Bonnie Louise Sedlacek (Blankenbaker)

Joyce Roderick

Posted at 02:36am
The Lord her pasture has prepared. I can see her driving up the washboard lane on the farm, dust trailing her pink Studebaker. She was compassionate, wise and filled with grace. She always will be in our hearts.

Bill F

Posted at 08:42am
My sincere condolences to the family and friends, so sorry for your loss. Please find comfort in knowing that Jehovah God will soon resurrect our dear loved ones (John 5:28-29). O how we long for the day when pain, suffering and death will be no more, these former things will have passed away (Revelation 21:3-4).

The Blue Creek Girls

Posted at 12:14am
We are so sorry for your loss. Your family is in our hearts during this difficult time.
Tree Image
A memorial tree was planted in the memory of Bonnie Sedlacek — Plant a Tree Now

Rhonda Wipf

Posted at 08:42am
Bonnie was a very kind and helpful coworker. My thoughts and prayers are with the family for their loss. I’m sure she will always watch over her loved ones. Rhonda Wipf

Nancy (Busse) Maynard

Posted at 08:05pm
I remember spending many happy times with my closest cousin Bonnie out on the farm playing in Ralph's grainery with newborn kittens (probably with mice and snakes), swimming in the irrigation ditches (probably with snakes and mud), and climbing all over the straw bales (probably also with snakes and mice), and getting my first kiss on a nighttime hayrack ride!
Me afraid? Nope, if Bonnie did it so did this city cousin. Many family reunions were shared on the farm too, including everyone's special potluck dishes.
Thank you for the memories sweet cousin, gone much too soon.
Condolences and love to her family.
Nancy (Busse} Maynard
Wichita, KS

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