Evolving Tree Therapy

A Note from the Co-Founders, Jackie Tanner & Sarah Osborne

Evolving Tree Therapy was built on a simple but powerful belief: no one should have to navigate life’s hardest moments alone.

Jackie and Sarah first met years ago while working in a treatment setting, where they witnessed—again and again—how much people carry beneath the surface. Even when life looks “fine” from the outside, many are quietly managing stress, disconnection, uncertainty, or overwhelm.

Their paths eventually diverged, but the work stayed with them. And so did the question:

What would it look like to create a space where people feel truly supported—not just treated, but understood?

When their paths crossed again years later, that question became a shared vision.

Through conversations about their work, their clients, and their own life experiences, they saw a common thread: people are often expected to hold it all together without enough support. Whether navigating relationship challenges, life transitions, identity shifts, or simply the weight of everyday stress—many are doing it alone.

Evolving Tree Therapy grew from the desire to change that.

They set out to build something different—a practice grounded in connection, authenticity, and meaningful care. A place where therapy feels human. Where you don’t have to explain everything perfectly to be understood. Where you can show up as you are and begin to make sense of what you’re going through.

The name Evolving Tree reflects what they believe about growth:

It’s not linear. It doesn’t happen all at once. And it’s not meant to happen alone.

With the right support, people can feel more grounded, more connected, and more capable of moving forward—both within themselves and in their relationships.

Today, Evolving Tree Therapy is a growing group practice supporting individuals, couples, and families through a wide range of life experiences. While their roots include deep work around the transition to parenthood, their mission has expanded to meet people wherever they are.

Because at the end of the day, this work isn’t about a specific phase of life.

It’s about helping people feel less alone in it.

Take the First Step

You don’t have to do this alone. Connect with us today and find the support you’ve been looking for.

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.

Kristin Donovan, LMSW

Kristin Donovan, LMSW, believes healing happens through connection, compassion, and having a safe space where clients can feel truly seen and supported. She works with children, adolescents, and adults navigating trauma, PTSD, anxiety, behavioral concerns, postpartum experiences, and personality disorders. Kristin approaches each client with warmth, compassion, and the understanding that healing is never one-size-fits-all.

Drawing from evidence-based approaches including Cognitive Behavioral Therapy (CBT), Dialectical Behavior Therapy (DBT), Motivational Interviewing (MI), and Play Therapy for children, Kristin creates personalized treatment plans that honor each client’s unique experiences and goals. She is passionate about helping clients build practical coping tools while also creating space for deeper healing and self-understanding.

At Evolving Tree Therapy, Kristin strives to provide a grounded, nonjudgmental environment where clients can feel safe exploring their story at their own pace. Like a tree growing through every season, she believes healing happens by strengthening the roots, building resilience, and creating room for continued growth and transformation. Kristin is currently accepting new clients.