Meet the Teachers

Mary Lee Barron PhD, APRN, FNP-BC, FAANP
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Emily Grimm BSN, RN

Sarah Reiter BSN, RN

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Mary Lee Barron PhD, RN, FNP-BC (R), FAANP

St. Margaret Mary Alacoque Parish, Oakville, MO


Hello! I am Mary Lee Barron, a wife and mother of 3 children. I served in the US Naval Reserve for a number of years. However, most of my nursing career has been spent in Women's Health both as an RN and as a FNP, then later as a teacher of nurses and nurse practitioners (Saint Louis University and SIUE). I started teaching NFP in 1998 and brought Marquette Method to St. Louis in 2002.   Using NFP has been a gift to me in my marriage and professionally. I found that the NFP charts were a really authentic way to take care of women and couples. Marquette Method, in particular, has been a joy to teach and provides the most variety of ways to help couples work with their gift of fertility!

Emily Grimm BSN, RN

Incarnate Word Parish, Chesterfield, MO


Hello, I’m Emily Grimm. I received my Bachelors degree in nursing from Rockhurst University in Kansas City MO. I live in St. Louis with my husband and two children. I work full time as a school nurse at Cor Jesu Academy, my alma mater. It was at Cor Jesu Academy that I first learned about Natural Family Planning.  A speaker told us how you give of yourself totally, faithfully, and fruitfully to your spouse through Natural Family Planning, just as Jesus did when He died on the cross for us. This changed my world and I knew I wanted to incorporate this in my marriage. My husband and I learned the Marquette Method during our marriage preparation and started practicing it after the birth of our son.  I teach the Marquette Method because I love women’s health. I believe in fertility health and that nothing harmful should be put into our bodies. God created our bodies perfectly and we can use the beauty of our fertility through Natural Family Planning. I love meeting new couples and guiding them through their journey with NFP, both the highs and the lows.

Sarah Reiter BSN, RN

Sacred Heart, Valley Park, MO


Hello!  I am a wife of over 25 years and a mother of four.  I received my nursing degree from Truman State University and started working in orthopedics and later, the GI lab.   After my third child arrived, I stayed at home full time.  NFP has been a part of our marriage, but I never thought about teaching it until I was asked.  Saint John Paul II’s Theology of the Body opened my eyes in a new way to the beauty of human dignity.  With that new insight, it was easy to say yes to an opportunity to educate women and couples on their fertility.  I now teach NFP as well as work at a pregnancy help center which allows me to share the truth of God’s plan for our fertility.  It has been an honor to work with people in all walks of life and learn from them as well.