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Our Team

Each child has a team of creative and knowledgeable individuals who collaborate to create a well-rounded Plan of Care.



Executive Director

Angela has worked with individuals with autism and other developmental disabilities since 2001. She received her M.S in Behavior Analysis and Therapy in 2006, became a BCBA in 2007, and was one of Wisconsin's first licensed Behavior Analysts in 2009. Angela has assisted with consultation and training with adults and children in schools, private homes, adult group living facilities and day programs, as well as in-home and center-based ABA programs. Areas of expertise include skill acquisition for adults and children, decreasing unwanted behaviors, facilitating job skills, social skills, and daily living skills, and increasing communication through functional communication. When she's not having fun at TRIO, she spends time with her three children and husband at hockey, cheer, or choir practice!



Clinical Director and Early Start Denver Model Certified Therapist

Kim is an Early Start Denver Model certified therapist, and teaches in the special education department at UW-Oshkosh. Ms. Nichols-Green began working with individuals with autism in 1998. She earned her B.A. in Psychology in 2000, and her M.S.E. in Special Education in 2009. She also completed the autism certification through UW-Oshkosh, and is certified in Therapeutic Listening. Now she is able to support individuals with various disabilities and their families directly and indirectly in the home and classroom through diagnosis, skill assessment and program development, training, suggesting resource referrals, and consulting with other service professionals.


Amanda Dalton

Behavior Treatment Therapist 

Amanda has been working in the Autism field for 10 years. She started out as line therapist (Behavior Technician) and has been working as a Behavior Therapist for the last 6 years. Amanda attended Marian University where she earned her Bachelor’s Degree in Early Childhood/Elementary Education. As a Behavior Treatment Therapist, she creates treatment plans, works with parents/caregivers and oversees technicians.


Sara Sippel

Behavior Treatment Therapist, Art Therapist

Sara has been working in the field of ABA therapy for over 15 years.  Starting in 2002 as a Behavioral technician at and in-home based program for children with Autism Spectrum Disorder. She has also worked in group homes, school districts and center-based programs. Sara will provide support and training as well as assessing the children’s skills while creating and building their treatment plans.


Krista Paine

Talent & Organizational Development Manager

Krista has worked with children and adults with different development disorders for three years and received her RBT certificate in 2019. Krista has graduated from Marian University in 2019 with a BS in Psychology and graduated in May 2021 with her master’s degree in Industrial Organizational Psychology. Krista wants to use her degree in helping workplaces become more adaptable to those with disabilities. At TRIO, Krista plays an important role in assisting with administrative duties, training new staff and hiring.


Karly Zelinski, BCBA

Behavior Analyst

Karly has been working with children with developmental disabilities since 2016. She has a M.S. in Psychology-Behavior Analysis from Marquette University. There she studied problem behavior reduction, skill building, and social skills training. She provides support and training for staff, assessments for children, and the development of treatment plans.


Vivian Hazell

TRIO Mentor

In early January 2022 I was welcomed into the TRIO community after being retired for two years. My career spanned 40 years working with diverse groups. During my final 20 years I created agencies that worked in homes to assist families in helping their children diagnosed with Autism Spectrum Disorder figure out the world. I was also employed as a family therapist and really enjoyed helping those struggling with issues of life. As the TRIO Mentor, I am bringing my understanding of those with ASD along with my therapy background to provide mentorship for TRIO team members and TRIO families.

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