Meet Reagan Costello-White, LCSW

When a child struggles with big feelings, challenging behaviors, or difficulty connecting with others, the whole family can feel the impact. Reagan Costello-White is a licensed clinical social worker who works with children ages 2–12 and their families, helping children feel understood and caregivers feel supported.
Reagan is certified in EMDR and Theraplay and practices evidence-based play therapies approaches that honor each child’s developmental needs.
Reagan's Space
Here are some sights from Reagan's space


Helping Children Through Play and Connection
Reagan uses Theraplay and Child-Centered Play Therapy to support children with emotion regulation challenges and difficulties with attachment and relationships.
Play gives children a way to express feelings and process experiences when words are hard to find. Reagan creates space for children to explore their emotions, build confidence, and strengthen their capacity for connection.
Supporting the Whole Family
Reagan views caregivers as essential partners in a child’s therapy. Alongside her work with children, she helps families better understand their child’s needs, respond to difficult moments, and strengthen attachment and relationships.
Her goal is to support lasting change through both the child’s therapeutic experiences and the connections they share with their caregivers.
Experience With Foster and Adoptive Families
Reagan has experience working with children and families connected to foster care and adoption. She recognizes that each family brings its own history, strengths, and challenges, and works collaboratively with caregivers to support their child’s emotional needs and sense of belonging.
EMDR for Children
Reagan is certified in Eye Movement Desensitization and Reprocessing (EMDR) and incorporates this approach into her work with children when appropriate.
EMDR can help children process distressing experiences that continue to affect their emotions, behaviors, or sense of safety. Reagan adapts the process to each child’s age and developmental needs, incorporating play and creative activities to support engagement and expression.
Care begins with building trust and helping children feel prepared. Reagan partners with caregivers throughout the process to help them understand their child’s needs and support healing at home.
Training and Professional Development
Reagan's certifications and areas of training include:
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Eye Motion Desensitization Reprocessing (EMDR) Trained
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Theraplay Level 1 Certified
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Collaborative and Proactive Solutions Provider Certified
Connect with Reagan
If you are looking for support for your child and family, contact Mindful Mountain Wellness to learn more about working with Reagan.