PSI AZ Chapter - Our Team

Bri Giles is a certified doula, mental health advocate, and Arizona native. Her passion for advocacy and outreach began in 2014 with international community work in Sonora, Mexico, South Africa, and China, where she led fundraising initiatives and awareness campaigns. After earning her Master of Science in Psychology in 2015, she channeled her efforts into mental health advocacy. 

Her personal experience with postpartum depression and a challenging birth in 2023 reinforced her commitment to raising awareness about maternal mental health and creating a safe space for families to share their stories.

Bri hopes to combine her background in psychology, online marketing, and community organizing to further the mission of PSI Arizona. With a dedication to breaking stigmas around mental health and championing family well-being, Bri strives to uplift parents through education, compassion, and advocacy.

Megan Hoovler is a Registered Dietitian and works as a Research Project Coordinator at her alma mater, Arizona State University, where she earned both her Bachelor and Master of Science degrees in nutrition as well as a certificate of leadership and ethics. Her graduate thesis examined the postpartum experiences of birthing women during the COVID-19 pandemic. Megan currently lives in Gilbert, AZ with her 2 cats, 2 dogs, and husband. She enjoys all things Rupaul’s Drag Race, Brené Brown, and baking.

Mariel Enríquez owns Hummingbird Counseling Services, a small private practice in Tucson, Arizona. As a native Tucsonan, attending the University of Arizona was a no-brainer. She earned a master’s degree in counseling with an emphasis in Rehabilitation and Clinical Mental Health. Her love for counseling was sparked in her earlier career as a Spanish teacher where she found herself engaged in conversations with students about their anxieties as they prepared to transition from high school students to graduates.

Although the experience of guiding her students through their worries was an inspiring factor in becoming a therapist, it was Mariel’s own experience with postpartum anxiety that fueled her passion to train in perinatal mental health. Constantly feeling like something was wrong and not knowing why was very concerning, yet the stigma of saying something made it even more frightening. Thankfully, her personal experience has served to approach the care of her perinatal clients with more compassion, empathy and understanding. 

In her practice, Mariel works with very diverse ages and populations, ranging from children and teenagers to individuals and couples. Mariel loves working with a variety of issues like perinatal concerns, relationship problems, anxiety, stress, educational concerns, life transitions, and sexual issues, among others. She is also passionate about doing trauma work and has received EMDR training to help clients process and heal. 

Mariel is a life-long learner with plans to begin a certification program through the University of Michigan in Sex Therapy, followed shortly by embarking on her journey to earn a Ph.D. in Counselor Education and Supervision. Her love of learning is encouraged by her husband of 23 years and their three daughters. 

Kathleen graduated Nursing school in 1999 going straight to work in L&D. Her passion for helping all women has been evident throughout the years. Volunteering with Phoenix area homeless shelters for pregnant women, teaching Teen birthing classes and international medical missions demonstrates this passion. 

She is currently working full-time as a PMAD RN within one of the many Indigenous communities in Arizona. Since gaining PMH Certification in 2023, Kathleen developed and implemented a PMAD/ Grief and Loss program to follow patients at high risk for depression. This program follows a patient that may have scored high on a depression screening at their Obstetrical appointment, for a full year Postpartum. Grief and Loss are included in this follow up if a patient has experienced a loss. Patients have expressed much gratitude and appreciation for a program offering PMAD support and compassionate care.

Originally from Seattle, Kathleen has lived most of her adult life in Arizona. She is an avid NFL fan, loves to travel and spend time with her 5 grandchildren. She continues to assist wherever needed to empower underserved women and their children.

Natassia Williamson is a Family Nurse Practitioner, maternal mental health advocate, and founder of Aurora Maternal & Family Healthcare. As a disabled veteran and mother of three, she brings both clinical expertise and lived experience to her work supporting individuals and families during pregnancy, postpartum, and early parenthood.

Natassia is the author of ABC D

is Ability, a children’s book that celebrates disability inclusion and empowers young readers to embrace differences with confidence. She is also the creator of the blog Bottles, Boobs, and Feeding Tubes, where she shares stories, education, and practical guidance for parents navigating complex feeding and maternal health challenges. In addition, Natassia hosts the podcast Reflections of a Rebel Mom, a platform that amplifies honest conversations about motherhood, mental health, and redefining parenting norms.

She is honored to serve on the Postpartum Support International Board, advocating for trauma-informed care, culturally responsive support, and accessible perinatal mental health resources for all families.

Gail Williams is an Afro-Colombiana, full-spectrum doula, and fierce reproductive justice advocate based in Arizona. With over 20 years in community-based support, Gail has dedicated her career to empowering families and ensuring equitable access to care.

Holding a Bachelor’s in Early Child Development, Education and Policy, Gail's expertise is further shaped by 15+ years as a Lay Legal Advocate for victims of Domestic Violence and Sexual Assault, where she provided safety planning and legal navigation.

She is a recognized leader, serving on the Arizona Doula Advisory Board Committee and acting as a Community-based Doula Trainer & Facilitator for Health Connect One. Through her LLC, Doula4Care, Gail specializes in supporting and mentoring doulas and families expecting multiples. She is also developing specialized workshops for families with children who have special needs. Gail is a mother of four, including a set of twins.