Mar Kaempffer, LMFTA, M.Ed

Relational Sex + Trauma Therapy for Individuals, Couples, Polycules, and Families in Seattle

nonbinary person smiles, with dimples showing. They have purple framed glasses and long blue hair.

Welcome! I’m Mar Kaempffer (they/them), a relational sex and trauma therapist at One Connection Healthcare.

I work with people who are seeking a new way of relating to themselves and others—one rooted in self-compassion, connection, repair, and agency.

I strive to co-create a felt sense of safety where clients can explore their identities, stories, relationships, and patterns with curiosity, new perspectives, and practical skills.

Mar currently provides virtual therapy for clients located in Washington State and is accepting new clients.

About Mar

Hi, I’m Mar Kaempffer, LMFTA, M.Ed (they/them). I primarily work with couples, polycules and ethically non-monogamous relationship structures, teens and adult children with their families, and individuals navigating trauma, sex, sexuality, gender, and identity exploration.

I especially enjoy supporting people with historically and intentionally marginalized identities within queer and trans communities, as well as neurodivergent and chronically ill/disabled individuals. I also work with people in larger bodies navigating disordered eating and body liberation work.

Many of the people I work with are looking for more than symptom management alone. They are seeking deeper understanding, more connected relationships, greater self-trust, and support in building lives that feel more aligned, sustainable, and authentic.

People often get the most out of therapy with me when they appreciate a balance of gentle directness, collaboration, curiosity, and laughter in the therapy room.

My Approach to Therapy

What Working Together Looks Like

doorway into doctor's office. There is a window in the background overlooking seattle's mountains. two chairs are both positioned in front of exam table and facing a desk. The room is bright with natural light.

My Values In Care

I believe therapy should be collaborative, transparent, and rooted in consent.

If a client would benefit from a higher level of care, more specialized support, or additional services outside my scope, I will work with other providers on the care team and make referrals when appropriate.

Therapy frequency, duration, and goals are always decided together, client-dependent, insurance-dependent, and open to adjustment as needs evolve over time.

Who I Work With

*Please note that I do not work with with children under the age of 13.

Education, Training, and Clinical Experience

I graduated in 2025 with a Master’s degree in Couple and Family Therapy from Antioch University Seattle, where I also earned a certificate in Sex Therapy. I am currently pursuing AASECT certification.

My clinical training includes trauma-focused care, Gottman Couples Therapy Level 1 training, and Washington State’s 60-hour Domestic Violence Intervention Treatment (DVIT) training.

I completed my year-long internship at Hope Development Practice, where I gained experience working with a wide variety of clients, identities, and relational systems.

Prior to becoming a therapist, I earned a Master’s degree in Education from the University of Washington Seattle in 2020, as well as a certificate in Education for Environment and Community through IslandWood. I also completed significant coursework in feminist thought and pedagogy.

My academic background, professional experiences, and lived experiences all inform the way I show up as a therapist—with intentionality, patience, curiosity, compassion, clear communication, and care.

What Keeps Me Joyful

Outside of therapy, you can usually find me with my two dogs—Bigsby, a Great Dane/Mastiff mix, and Kodiak, a Yellow Lab—most likely somewhere near the water.

I fill my cup by being outside, gardening, swimming, spending time with friends, attending community events, playing board games, and working on crafting projects. I’m known for seeing something somewhere and immediately saying, “I can do that,” before attempting to make it myself.

I also love connecting with other neurodivergent people around special interests, creativity, curiosity, and learning new things.

Work with Mar |

Work with Mar |

Let’s See If We’re a Good Fit

Finding a therapist you feel safe, connected, and collaborative with matters.

If you are looking for relational, consent-based therapy rooted in compassion, curiosity, repair, and authenticity, I would love to connect with you.

Whether you are navigating trauma, relationships, identity exploration, neurodivergence, sexuality, or systemic harm, therapy can become a space to build new understanding, skills, connection, and possibilities.

doorway into doctor's office. There is a window in the background overlooking seattle's mountains. two chairs are both positioned in front of exam table and facing a desk. The room is bright with natural light.