Welcome to Your Fourth Trimester


what is a postpartum doula?

A postpartum (period following childbirth) doula (companion to the birthing person) is a support person that meets you on the other side of your birth outcome. 

A postpartum doula offers physical and emotional support, evidence-based information, and in-home assistance to families as they experience the early stages of this profound life change. You may have received lots of education, resources, and support through your pregnancy, but have none of that infrastructure when you are at home with a newborn in your arms.

Historically, postpartum support was provided by other family members, but any postpartum support has become an exception in the United States. A postpartum doula fills in that gap of care as a professionalized and trained non-medical care provider. 

what are the benefits of a postpartum doula?


Baby Juana - March 2018-225-2.jpg
  • greater self confidence

  • less postpartum depression

  • greater breastfeeding success

  • lower incidence of abuse



source: www.dona.org



"Research by experts tells us what many have long suspected-that those new parents who have support and feel secure and cared for during this time are more successful in adapting than those who don't. Studies have shown that cultures in which women are cared for by others for a defined period of days or weeks and are expected only to nurture themselves and their babies during that time have superior outcomes in postpartum adjustment."

services and pricing

In my role as your postpartum doula, I support you through your transition from pregnancy to parenthood. I provide services with empathy and without judgment.

Those services include:

  • evidence-based information and education regarding:

    • newborn care (like wearing or swaddling your baby)

    • normal newborn behavior

    • lactation (as a Certified Lactation Educator)

    • perinatal mood changes

  • light household chores (like dishes or laundry)

  • preparing meals

  • running errands

  • facilitating sleep and self-care (holding your baby while you sleep or shower)

  • care for older children

  • referrals to local care providers you might need

Daytime sessions are thirty-five dollars an hour

My initial consultation is free

Lactation Education sessions can be scheduled separate from my doula services, for seventy dollars per a two hour visit.

These sessions are designed to educate and assist families with normal breastfeeding challenges to help them reach their feeding goals, with evidence-based info and consulting on:

  • breastfeeding positioning

  • breastfeeding and sleep

  • bottle feeding

  • pumping





Mary’s passion for this work comes from a belief that children and families are the cornerstone of all human communities, and they deserve to be nurtured and treated with reverence. After years of working mostly with families with children of toddler ages and on, she noticed a pattern - parents were trying to care for their children from a state of compounded stress that began at their child’s birth. She was inspired to support families at the beginning of their journey together. Mary experiences childcare as a joyful responsibility, and her goal is to show the parents she works with how to experience the same.

 Mary was born and raised in West Seattle. She is an AmeriCorps and University of Oregon alumna. She has over a decade of experience caring for children as both a teacher and a nanny. Mary has taught in preschools and early education centers with various teaching philosophies (including Reggio Emilia and The World at Their Fingertips).  She is grateful for the meaningful relationships she has built with children and parents along the way.  

Mary received her Postpartum Doula training and Lactation Educator certification through Bastyr University. She is a NAPS (Northwest Association for Postpartum Support) certified postpartum doula, and serves as the Membership Lead on the NAPS Board of Directors.

When Mary is not doula-ing, she is probably walking along Alki with her family, cooking, reading, watching Netflix, or planning her next vacation. 

Training and Education

  • BA in English Literature and BA in Women and Gender Studies (University of Oregon)

  • Postpartum Doula Training (Bastyr University)

  • Certified Lactation Educator (Evergreen Perinatal Education)

  • Baby Wearing for Birth Professionals (Adapting to Love)

  • Washington State Food Handler’s License

  • Barks and Babes: How to Prepare Your Dog For Baby (Dog’s Day Out Seattle)

  • Sleep Savvy: The Art and Science of Breastfeeding and Sleep (Savvy Parenting Support)

  • Supporting Muslim Families in the Age of Islamophobia (Haleema Bharoocha)


Mary provided great care for our triplets! She is nurturing, resourceful, and down-to-earth.
— Brooke, Mother of Five
Mary was absolutely VITAL to my recovery following the cesarean section birth of my first baby, Thor. Mary is smart, intuitive, extremely skilled at multitasking, and somehow maintains a remarkable level of grace through it all. She supported me during the toughest time of my life through performing domestic chores around the house, cooking, cleaning, taking my baby on short walk while I showered and/or napped, but above all, was there and just LISTENED to my daily, early motherhood struggles. I highly recommend Mary to any mother in need of extra postpartum support. I consider myself so very lucky to have crossed paths with such an intelligent and empathetic mother, woman and Doula.
— Christina, Mother of One
Mary came into our lives when my daughter was less than six months old. I was in between nanny’s and Mary was home from college for a month on winter break. She saved my sanity and I ended up calling her once she graduated and asking her to come back for the summer. She was wise beyond her years and such a calming presence for my two kids. She returned for repeated summers with our family and we still stay in contact. I loved the genuine connection she had with my kids where she appreciated them for who they were and helped foster their individuality. It has been a pleasure seeing her start her own family and now start a business where she can bring that same tranquility, care, and steadiness to new mothers.
— Amy, Mother of Two
I have known Mary for 4 years and have found her to be kind, calm, articulate and compassionate. She was an amazing preschool teacher and our bond with her continues as our family adores her.
— Erica, Mother of Two

West Seattle Doula Services owner, Mary Killeen Peña, featured in an interview with ParentMap

Why You Should Hire a Postpartum Doula

“Am I doing it right?” I asked my husband sheepishly, my tiny, hours-old baby pressed with a frenzied hand over my cloth-draped shoulder. Neither one of us had ever burped a newborn, and, as it turned out, he had no idea how to do it either.

Two weeks later, alone with the baby for the first time, exhausted and overwhelmed, I cried for three hours over a load of undone laundry. I didn’t know then what I know now, after mostly “winging it” through my fourth trimester: Postpartum doulas are a thing, and they help with that kind of stuff.

So who are these modern-day heroes and why did no one mention them to me? The issue is more complex than I thought. I had a conversation with Mary Killeen, a preschool teacher and nanny turned postpartum doula and owner of West Seattle Doula Services, about the importance of postpartum care, why it’s lacking in the U.S. and how our communities benefit when we support women and parents after childbirth.

Read the rest of the interview at ParentMap.com.



I am based in West Seattle, but will travel within 1 hour (about 20 miles).