Owner of Lassen Intervention and published author of “STOP IT! Don’t Compare Your Insides With Other People’s Outsides.”  Mrs. Petersen has lived in Lassen County for over 50 years, and is a public speaker, both nationally and internationally. She has been working with those in addiction recovery for ten years, and received a dual Degree in Drugs & Alcohol and Human Services. She is the founder of the non-profit Lassen Wellness Center. 

Email: Jennifer@lassenintervention.com
Phone: 530.310.0169

Shayla J. Ashmore is a licensed marriage and family therapist with 14 years of counseling experience, including Child Abuse Treatment therapy at the non-profit Lassen Family Services in Susanville and seven years in private practice.  She holds a master’s degree in Counseling Psychology and a journalism degree from the University of Kansas. She also has experience as a newspaper editor, television news reporter and anchor, magazine feature writer and radio news reporter and announcer. She is married and has four grown children and lives in Susanville.

Email: Shayla@lassenintervention.com
Phone: 530.310.0572

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Elizabeth Darley has enjoyed raising her family in the giving community of Lassen County for over 25 years.  Mrs. Darley began her career, serving in Lassen County Schools with her Bachelor of Arts degree in Speech and Hearing sciences. Deepening her spirituality, she earned a Degree from Global University and is now a licensed minister. She is currently pursuing the final year of a Master’s in Social Work degree and is the program director for Stronger Families. Mrs. Darley lives her life motto out with: “We are all students of life, and we’re here for a purpose, on purpose.”

Christena Parker-Petersen has her ASW and previously practiced in West Jordan, UT. She has experience in providing mental health counseling in residential treatment centers for adults and adolescents servicing a variety of mental health concerns.  She has provided individual, family, and group services for adolescents with behavioral, substance, and mental health issues primarily focused on reuniting and strengthening the family system.  She serviced adults in residential treatment for substance use and mental health concerns providing individual and group therapy.  Outside of work, she enjoys spending time outside hiking, rock climbing and searching for new places to explore.

Email: Christy@lassenintervention.com

Brent moved to Lassen County in 1971. He received his LVN and worked at HDSP as a Medical Technical Assistant and officer. Most recently, he retired from his position as Counselor. Brent is organized and has a straight forward approach, making sure the operations of the office run smoothly. He has been married since 1991, and they have four children who have chosen great spouses. Brent’s preferred title is “Papa Pete.” And his favorite thing in the world is to hang out with his grandchildren and collect rocks.

Lisa is currently attending school to be a Substance Use Disorder Counselor. She moved to Lassen County from the Bay Area in 2021 and has grown to really love the people in this community. Lisa began this journey helping others several years ago in a perinatal program in Sonoma County and is now excited to continue helping others. In addition, she feels passionate about working in the field of recovery. Lisa has three amazing children and brings her knowledge and experience to help others. When not working Lisa enjoys live music, reading and traveling. She is also currently learning how to preserve (can) food and make homemade jam. She feels blessed to be a part of Lassen Intervention and their amazing team.

Email: Lisa@lassenintervention.com

Sydnee was born and raised in Lassen County and has worked with the public at IGA, Ace Hardware, and as a teacher assistant for McKinley’s afterschool program. She also served on P-CREW for the Fire and Ranger Station. Sydnee attended Lassen High School and Lassen College receiving her CNA certificate. She attended a service mission to help others in Idaho and Utah for 15 months and believes helping others is the most important thing anyone can do. Sydnee loves setting goals and achieving them. Hobbies include: Puzzles, putting things together, making friends, playing games, reading, swimming, watching movies, and going on walks.

For 31 years, Tim Darley served as a dedicated and respected correctional officer within the Department of Corrections. Tim’s family has been his pillar of strength throughout his career. He shares his life with a beautiful wife, Elizabeth, who is a social worker, specializing in therapy programs.

Together, they have raised two wonderful children, whose achievements and successes have been a source of immense pride for Tim.
In his retirement, Tim cherishes spending quality time with his grandsons, Saint, Carver and Coleson and fishing.

Since retiring from the Department of Corrections, Tim has continued his commitment to service by working as a maintenance man at Lassen Intervention, where his wife is employed.
This role allows him to support his wife’s valuable work in social intervention programs while engaging with the community.