Our Team

Board of Directors

  • Sherlyn Houk

    PRESIDENT

    Sherlyn is a Ludington native. In 2018 she relocated back to Ludington after 25 years in the Ann Arbor area. She is a graduate of the University of Michigan with a B.A. in Linguistics and Eastern Michigan University with an M.A. in Speech-Language Pathology. She has been an educational speech-language pathologist in Southeast Michigan for many years and is now a pediatric speech-language pathologist at Corewell Health Ludington Hospital. She is a member of the American Speech-Hearing Association and Women Who Care. She loves living close to Lake Michigan.

  • Nanette Kibbey-Scribner

    VICE PRESIDENT

    Nanette is a native of Ludington and Mason County. She is a graduate of Ludington High School and Ferris State University with a Bachelors in Biology and Medical Technology. She is a retired Medical Technologist from area hospital laboratories. She is actively involved in volunteering throughout Mason County including LACA, Tree Advisory Board, Zoning Board of Appeals and Ludington Senior Center. Nanette is a mother of 3 children and a grandmother of two. She enjoys being outside, and loves the beach, music, gardening, kayaking, and traveling the world.

  • Darlene Ponko

    SECRETARY

    Darlene, a founding board member, is a Ludington native and a graduate of Western Michigan University with a BA in Elementary Education. She is a retired Ludington Area Schools elementary teacher. Darlene is active in community service/social organizations such as AAUW, PEO, and Beta Sigma Phi and a member of Ludington United Methodist Church. She travels extensively throughout the world and visits family in Australia often.

  • Sarah McMahon

    TREASURER

    Sarah was born and raised in Ludington and has lived much of her adult life here. She graduated from Michigan State University with a degree in Kinesiology and later from Grand Valley State University with a degree in Education. Prior to staying home with her young children, she spent the first part of her career working for a local business before transitioning to the nonprofit world. Sarah enjoys the simple, important things in life like unstructured outdoor play with her family, usually with a lukewarm cup of coffee in hand.

  • Marsha Barter

    PAST PRESIDENT; GRANTS

    Marsha, a graduate of Central Michigan University (BA and MA) and Western Michigan University (MA), is retired from a career as a teacher, a consultant for gifted programs, and the director of the Mason-Lake Oceana Mathematics and Science Center. In Pentwater, she served as president of the preschool board and as a school board member. She has been church pianist at Centenary UM Church in Pentwater for over 40 years. She and her husband love to travel and have visited all 50 states and several countries.

  • Kelli Stojic


    Kelli and her family relocated to Scottville from Bay County in 2018. Born and raised in Kalamazoo County, Kelli was a practicing cosmetologist for ten years prior to starting a family. Kelli, her husband, and their four boys have a ten acre piece of paradise in Victory Corners they share with their turkeys, chickens, bunnies, dog, and hermit crabs. Kelli has been Children's Ministry director for St. Luke's UMC in Essexville and a Parent Advocate for the Bay County Great Start Collaborative. She also served on the Parental Advisory Board for Victory Early Childhood Center. She loves hiking, kayaking, reading, and has recently begun compiling a book of her writings.

  • Jessica Thompson


    Jessica has lived in Ludington for 18 years, nearly her entire adult life. She married a Ludington native and they now have two small children, a beloved family dog, and a small hobby farm in the woods. Jessica worked as customer service representative at a local bank for 6+ years shortly after moving to the area, but in 2015 she decided to shift gears and entered the WSCC nursing program. She also sits on the board of directors for St. John's Health Care and Blue Hat Ministries, two businesses she is deeply passionate about as both a nurse and a member of the community. When she isn't outdoors chasing farm animals with her dog, or running her kids to and from school & sporting events, you can find her serving the community that she so dearly loves.

  • Natasha Worder-Bilinski

    Natasha moved to Ludington in 2018. She grew up in the San Francisco Bay Area, completed her BA in Biology at Smith College and earned a PhD in Plant Biology from the University of California, Davis. Just before moving to Ludington Natasha was working at a research University in Germany. She is currently working as the Director of Research at Gourmet Mushrooms in Scottville. Natasha loves visiting Sandcastles every weekend with her toddler daughter and otherwise likes going for walks in the woods with her husband Paul and her lovable labsky dog Odie. She also enjoys cooking and visiting new places in her new home in Michigan.

  • Joy Martinez

    Joy is a proud Ludington native who has called this community her home for most of her life. She is a graduate of Ludington High School and West Shore Community College with an Associate's degree in Accounting. Joy had worked in banking before taking a break to focus on her family. With her husband Brandon, they have a dog and three wonderful kids. She loves attending and supporting her kids’ school and sporting events. She also likes to spend her time thrifting, doing embroidery, and drinking lots of coffee

Gwen Adams, Executive Director

Gwen Adams joined the Sandcastles Team as the Executive Director in January 2025. She is from Bay City Michigan and completed her bachelor’s degree in history at Saginaw Valley State University. While not native to this side of the state, she spent her summers with her grandparents in Pentwater and after graduation, worked for various West Michigan non-profit organizations, including nearly 7 years with the Lakeshore Museum Center of Muskegon County. She is active in local historical societies and groups, a member of Michigan Museums Association, and serves as a Head Start Policy Council Parent Representative. She is a certified Red Cross instructor, book lover and an experienced kayaker with Hamlin Lake as her favorite kayak spot. She resides in Oceana County with her husband, daughter, dog and two cats.

As Executive Director, Gwen works closely with the Board as an ex-officio member. She promotes the museum’s mission while serving as spokesperson for the museum. She is passionate about creating spaces for children and families where they can play, learn and have access to resources for development and education that is safe and inclusive.

Contact Gwen:

Sandcastle’s Team is enthusiastic about their commitment to the museum.