The Sensible Shoes series is one of my absolute favorites.
Rarely have I read a book whose characters are as real and meaningful, and they truly "jump off the page". Its spiritual depth and wisdom extends beyond the story to challenge readers to consider and evaluate their own lives, and engage in their own spiritual formation if they choose. In profound and heartfelt ways, this series examines significant heart and life issues (like letting go of control, trusting God, perfectionism, identity, and loss) and discusses spiritual disciplines and practices (like prayerfully reading the Word (lectio divina), the prayer of examen, journaling, spiritual direction, and other ways of prayer) that can help sanctify and shape us, all through storytelling and characters which become mirrors for seeing ourselves more clearly (as well as serve as models for the disciplines specifically and Christian community generally).
In the fourth and last book, An Extra Mile, we continue on our journey with Mara, Hannah, Charissa, and Becca (who has a bigger role in Meg's absence). These women all have a lot to process and have challenges and struggles they are facing and grappling with as the story leads up to Good Friday and Easter. This book is very much a "resurrection" story, and even though it does not end all neat and tidy with a bow on top (in terms of circumstances), it nevertheless is a fulfilling conclusion as we leave the women with growing faith and trust, along with friendship, and the confident hope that, as Sharon Garlough Brown put it at the book launch party I attended, "all will be well".
Note there are mature themes/content (handled discreetly) and for that and also general comprehension and appreciation, I would recommend this series for adults (female primarily). I would also note to anyone wondering about the spiritual disciplines detailed or denomination-level differences (e.g., female pastors, which I personally don't agree with), don't let these points keep you from enjoying this series' meaningful characters and wise Biblical conversations and counsel; the disciplines at least are clearly supplemental tools for spiritual formation, not ever portrayed in a New Age mysticism/higher enlightenment sense at all.