Our Staff and Board

Margaret Coyne, Attorney at Law

Executive Director

Margaret Coyne is the co-founder of Advokids and has been with the organization in different capacities since its creation in 1993. She currently serves as the executive director. After completing her undergraduate degree from Santa Clara University, Margaret graduated from the University of San Francisco School of Law in 1982. She then served as a Deputy City Attorney, representing the San Francisco Department of Human Services’ Child Welfare Division, before moving to private practice. Margaret was the first attorney appointed to exclusively represent children on the San Francisco Juvenile Court Minor’s Panel in 1985. She retired from private practice in 2002 to lend her legal skills and expertise to Advokids to promote safety, stability, and permanency for foster children throughout the state. Margaret is an affiliate member of the American Academy of Pediatrics’ Council on Foster Care, Adoption, and Kinship Care.

Janet G. Sherwood, Attorney at Law, CWLS

Senior Staff Attorney

Janet Sherwood, a co-founder of Advokids has more than 40 years of experience working in the child welfare law field. Her experience includes an in-house counsel job at the State Department of Social Services, serving as a Deputy Attorney General representing various state health, education, and welfare agencies, and more than 20 years in her own private law practice in which she represented parties in both the trial and appellate courts. She is a past Board President of the National Association of Counsel for Children (NACC) and a Child Welfare Law Specialist (CWLS), certified by the NACC and accredited by the State Bar of California’s Board of Legal Specialization. Ms. Sherwood is also a consultant, trainer, expert witness, and frequent speaker on child welfare issues.

Claudia Moeller

Chief Operating Officer

Claudia joined Advokids in 2024, bringing over 10 years of experience in nonprofit management, including executive and Board leadership focusing on strategy, finance, operations and organizational management.  Prior to moving to the nonprofit sector, Claudia spent 20 years in investment management and financial services.  She earned a BA in Economics and Spanish from Hobart & William Smith Colleges and an MBA from NYU’s Stern School of Business.

Tabatha Yin Kallman, Attorney at Law

Staff Attorney

Tabatha Yin Kallman joined Advokids as a staff attorney in 2016.  Ms. Kallman is committed to advocating for children and families through her work on the Advokids hotline, creating content for Advokids' website, and supporting statewide legislative efforts and policy reform in child welfare.  Prior to joining Advokids, Ms. Kallman earned her bachelor of arts degree from Cornell University in 2000 and her J.D. from the University of California Hastings College of the Law in San Francisco in 2006.  Ms. Kallman practiced in litigation for six years before focusing on juvenile dependency.

Jennifer Murphy, Attorney at Law

Staff Attorney

Jennifer Murphy is a yoga and meditation teacher who joined Advokids as a volunteer staff attorney in 2018. She has volunteered in a variety of roles with child-centered organizations in both New York and California for decades. Ms. Murphy earned a Bachelor of Music in Piano Performance from the Mannes College of Music in New York in 1988, followed by a J.D. from the Benjamin N. Cardozo School of Law in 1997. For the majority of her legal career, Ms. Murphy handled securities enforcement and regulatory matters for an international law firm at its New York and San Francisco offices.

Markie Flores, Attorney at Law

Staff Attorney

Lauren Kelley

Development and Program Coordinator

Lauren joined Advokids in 2025, contributing to development efforts and program coordination. She earned her B.S. in Sociology and Journalism from Santa Clara University. Lauren has supported youth and families in a variety of roles, including as a behavior technician and crisis hotline responder, and has contributed to development and evaluation efforts at several mission-driven organizations. She is passionate about childhood development and advocating for children's psychological well-being.

Katrina Devine, MSW, APSW

Staff Social Worker

Katrina officially joined the staff of Advokids in 2022, after being a long time client, supporter, and volunteer.  She interned and worked as a Senior Social Worker for Orange County before becoming a foster and adoptive parent in LA County. Most recently she worked as a legal assistant to minors' counsel in Orange County. Katrina earned a BA in International Studies and a BA in Sociology from the University of Wisconsin-Stevens Point and a Masters degree in Social Work from California State University-San Bernardino.  She is passionate about sharing what she's learned in her various roles working with children in foster care and helping others involved in the lives of children and youth in foster care advocate for the best possible outcomes.

Kelli Sedgewick

Los Angeles Liaison

Kelli and her husband have fostered children in Los Angeles for a decade. She has become a vocal foster youth advocate. Kelli became a nonprofit entrepreneur when founding Tori’s Torch, a foundation set up to educate, empower, and encourage caregivers to be a voice for children in the juvenile court system. Kelli has become a powerful liaison between county agencies, foster parent support groups, and statewide child advocacy organizations with the purpose of improving communication across all sectors and to encourage child centered decision making. She facilitates a support group for resource families in Los Angeles and Northern Orange County.

Board of Directors

• Margaret Coyne, Attorney at Law, Executive Director, Advokids
• Cheick Diarra, Genentech
• Lou Florival, Founder & Managing Partner of Zova Realty Funds
• Ronesha Jackson, Center for Excellence in Nonprofits
• Dan McKenzie, MetLife Investment Management
• Didier Perez, Chief Executive Officer, PhenoBiome Inc.
• Janet Sherwood, Attorney at Law, Child Welfare Legal Specialist, Deputy Director, Advokids
• Mandy Stewart, Chief Executive Officer, Keens Shay Keens

Advisory Board

• Mark Bettini, M.B.A, Financial Consultant
• David M. Brodzinsky, Ph.D., Developmental Psychologist
• Frederica L. Conrad, Ph.D., Child Psychologist
• Deborah Dentler, Attorney at Law, Foster Care Adoption
• Douglas R. Donnelly, Attorney at Law, Adoption Specialist
• Donna Wickham Furth, Attorney at Law, Amicus Curiae Consultant
• Susan Horst, Attorney at Law, Writ Specialist, California Appellate Law Group
• William J. Levinson, Ed.D., Executive Consultant
• Deborah Lowe Martinez, Attorney at Law, Education for Foster Youth
• Sally Coghlan McDonald, Attorney at Law, Special Education and Disability Rights
• Tiffany Sickler, Ph.D., Social Worker Consultant