Tammi Van Hollander, LCSW, RPT-S, Owner

Tammi Van Hollander, LCSW, RPT-S is a licensed clinical social worker and Registered Play Therapist Supervisor, and has spent over 20 years working with children, families and individuals. Her work and creative interventions in the field of play therapy have been published and internationally recognized. Tammi is the author of a multi-sensory, attachment-based children’s book titled, Casey’s Greatness Wings: Teaching Mindfulness, Connection, and Courage to Children. The success of the book inspired her to create Casey’s Greatness Sticks & Greatness Cards to be used in schools, counseling and in the home. She specializes in attachment, sand tray play therapy & sensory integration working with infants, children, families, and adults of all ages.

She holds a Master of Social Work from The University of Pennsylvania and has had extensive training and supervision from The Family and Play Therapy Center in Philadelphia.


She is a certified Advanced Trainer for the Nurtured Heart Approach®, a certified FirstPlay® practitioner and a founding board member of The World Association for Sand Therapy Professionals. 

Sandra Holloway, LPC, LBS, R-DMT, PhD

Sandra Holloway, LPC, LBS, R-DMT, PhD (genetics) is a licensed professional counselor, licensed behavior specialist, Registered Dance Movement Therapist, and PhD level biologist. She has taught Developmental Psychology and Biopsychology at local Universities for 10 years.


Sandra has worked as a dance movement therapist and play therapist with children for 19 years in hospitals, intensive outpatient programs, schools, in the community, and in private practice. During her sessions with children, Sandra is known for creatively adapting whatever your child brings to the session into a fun and therapeutically helpful activity that has a foundation in evidence-based practices and the biology of the child’s developing brain.


Sandra has held workshops locally and within the United States on parent education, trauma-informed practices, and on developing an environment in schools and institutes (including for elite athletes) that supports the mental health of children. Sandra also works with adults.

Amy Ruzic, MA, BC- DMT, LPC

Amy Ruzic, MA, BC- DMT, LPC has supported children, adolescents, and families in school settings for nearly two decades. As a Board-Certified Dance/Movement Therapist and Licensed Professional Counselor, she believes in the healing power of creative movement and play, a language that is easily accessible to children. Amy specializes in developmental and attachment-based approaches of attuning to children’s non-verbal self-expression. This process allows children to feel seen, highlights strengths and passions, increases awareness of internal states, and promotes regulation of emotions.


Amy has presented her trauma-informed and culturally-conscious work with children and adolescents nationally, and recently co-authored a book chapter outlining movement-based self-care practices for helping professionals. She serves on the Pennsylvania Chapter of the American Dance Therapy Association (ADTA), and has provided clinical supervision to young professionals for ten years. Amy is committed to upholding the dignity of vulnerable populations, including neurodivergent, LGBTQIA, disabled, and historically traumatized folks. You can experience Amy’s powerful use of metaphor and playful connection in her ADTA Talk.

Women's Group in India
Tammi Van Hollander, LCSW, RPT-S
sandtray training

Sandra Holloway, LPC, LBS, R-DMT, PhD

Sandra Holloway

Amy Ruzic, MA, BC- DMT, LPC

Amy Ruzic, MA, BC- DMT, LPC