Evolving Tree Therapy

Evolving Tree Therapy was create by Moms for families.

A note from the co-founders, Jackie Tanner & Sarah Osborne

Evolving Tree Therapy, like all great things, grew over time. Co-founders Jackie Tanner and Sarah Osborne first crossed paths nearly a decade ago while working together at a treatment center. Their professional journeys diverged, with Sarah establishing her own private practice in 2017 and Jackie pursuing different roles in the mental health field. Life brought them back together in 2021, as both welcomed new babies into their families and discovered their children were at the same daycare. What started as casual conversations between two moms quickly turned into peer supervision meetings, playdates, and a deep bond over shared experiences.

In 2022, encouraged by Sarah, Jackie took the leap to open her own private practice. Around this time, Jackie encountered a pivotal moment: a client recommended the documentary Fair Play, which profoundly resonated with her. The film illuminated the struggles of modern parenting and the inequities many moms face, sparking a passion within Jackie to support mothers in ways she hadn’t previously considered.

As they continued to share stories of motherhood and their personal postpartum struggles, Jackie and Sarah realized a glaring gap in support for moms and families. One Saturday morning at a park, while pushing their kids on swings, the seeds of Evolving Tree Therapy were planted. Jackie mentioned her dream of opening a group practice, and Sarah shared her desire to do the same—but with a partner. Together, they envisioned a space where moms could feel cared for, validated, and supported in their unique journeys.

The name Evolving Tree Therapy emerged as they brainstormed. Mothers are the “tree of life” for their families, and by strengthening moms—the core—everyone benefits. Healthier moms mean healthier children, healthier partnerships, and healthier communities. They imagined a practice not just for therapy but also as a hub for community, humor, and reprieve—a space where moms and non-birthing partners could find balance and connection.

Today, Evolving Tree Therapy offers services that include individual counseling for moms, couples counseling, and support for non-birthing partners. What started as an idea has blossomed into a thriving practice with a mission to empower parents during the most challenging phases of life. And this is just the beginning.

At Evolving Tree Therapy, we are committed to growing alongside the families we serve. Stay tuned—our vision for supporting parents and families is ever-evolving, and we can’t wait to share what’s next.

Take the First Step

We know that taking the first step towards therapy can be hard. That's why we offer a free phone consultation to help you determine if our practice is the right fit for you. Contact us today to schedule your consultation.

Meet the Team

Brittanie Cavanaugh, LPC, LADC, EMDR Certified Therapist

Brittanie is a compassionate and dedicated professional counselor with 12 years of experience, specializing in substance use disorders and co-occurring conditions. Her passion is rooted in supporting adults affected by trauma, helping them rediscover their strengths, and guiding them in building a foundation for lasting well-being and personal growth.

Operating from a trauma-informed, strengths-based perspective, Brittanie integrates a range of evidence-based approaches, including CBT, DBT, IFS, and EMDR. This allows her to provide personalized care that is tailored to each client’s unique journey. With empathetic listening, validation, and a strong commitment to creating a safe, non-judgmental space, Brittanie empowers clients to reclaim their narrative, foster self-compassion, and work toward healing and flourishing.

Kelly Tarascio, LCSW, PMH-C

Kelly is a warm and compassionate Licensed Clinical Social Worker dedicated to supporting clients through life’s transitions and challenges. She believes in creating a safe, trusting, therapeutic relationship that fosters healing and recovery, and she is honored to be part of each client’s journey. Kelly looks forward to supporting you on yours with care and understanding.

After earning her Master’s degree from The Silver School of Social Work at New York University and a Bachelor’s degree in Social Work from Sacred Heart University, Kelly became a certified perinatal mental health clinician (PMH-C). She has specialized in working with young adults and women navigating significant life changes, including new motherhood, perinatal mood disorders, postpartum depression and anxiety, and perimenopause.

Kelly combines a variety of therapeutic approaches—such as Dialectical Behavioral Therapy (DBT), Motivational Interviewing, Cognitive Behavioral Therapy (CBT), systems theory, and solution-focused therapy—to offer personalized, effective support. Using a person-centered approach, she works collaboratively with clients in a compassionate and empowering way, helping them uncover their strengths and guiding them toward their personal goals.

NATHANIEL DOHERTY, MSW, Phd

Nathaniel Doherty is a thoughtful and deeply relational clinician who believes that everyone deserves a space where they can show up fully—without fear of judgment. His work is grounded in unconditional positive regard and a core belief that even when life feels out of balance, healing and restoration are possible. He is honored to support clients navigating anxiety, depression, trauma, stress, and the complex challenges that arise across different stages of life.

Nathaniel’s therapeutic approach is trauma-informed and integrative. Drawing from relational psychodynamic therapy, cognitive-behavioral therapy (CBT), Acceptance and Commitment Therapy (ACT), and mindfulness meditation traditions, he works collaboratively with clients to address both present-day concerns and the deeper roots of distress. Early sessions focus on listening closely and understanding each client’s unique story. Over time, therapy shifts toward building practical skills, strengthening insight, challenging unhelpful beliefs, and cultivating acceptance, resilience, and emotional balance.

Before entering clinical social work, Nathaniel earned a PhD in English and spent over a decade teaching at the college and high school levels. His background in literature, gender studies, and critical theory enriches his clinical work, particularly in his thoughtful engagement with identity, culture, gender, and meaning-making. He brings intellectual depth, curiosity, and compassion into the therapy room, creating space for reflection, growth, and authentic self-understanding.

Nathaniel welcomes clients of all gender identities, sexual orientations, beliefs, and backgrounds. He approaches each therapeutic relationship with openness, respect, and a commitment to creating a space where clients feel heard, valued, and empowered to move toward a more balanced and fulfilling life.