These are some of Theoni’s current and completed projects:

RESEARCH: Theoni is currently on the Historical Commission for the Cause of Canonization for Adele Brice, the seer of Our Lady of Champion. For years, she has been collecting data on this apparition, recently completing a year of correspondences with Belgian researchers to gather documentation from Adele’s homeland that the Diocesan archives did not yet hold.

OUR LADY OF CHAMPION: The Amazing Discovery of a Visitor from Heaven: AVAILABLE through Holy Heroes August 2026! Have you ever wondered what makes one Marian apparition “authentic” while another is rejected? Well, soon you and your teen will have the PERFECT book for that! This book will take you deep into the process of apparition approval investigations. Using church documents and a decade of research, this book will take you into the mind of the bishop whose duty it was to investigate the apparitions in Wisconsin in 2010. This book will be packed with photos and archival evidence!

Readers have requested a sequel to The Woman in the Trees. Packed with more in-depth research, the sequel continues the story of Adele Brice and the settlers on the peninsula. While Slainie’s family rebuilds after the Great Peshtigo Fire, Letti Lafont finds herself up against a real-life historical figure, an infamous anti-Catholic missionary who’s picking off the sheep in Adele’s flock. The entire peninsula knows this preacher’s name by now, and 15-year-old Letti must find a way to pry someone she loves out of his grip. Adele joins the Norbertine missionaries in a plan to expose the false preacher and his false priests, while Letti discovers God’s unexpected plans for her life. Follow the Lafont family, Adele and the sisters, and the Belgians of Wisconsin into the 20th century. This novel is under consideration at TAN Books.

“ALTAR BOY” is a historical fiction novel for middle graders that takes place in the 1970’s. The story will bring together various stances still currently debated in the Church about traditional practices and newer ones, along with some of the huge cultural shifts a young Catholic boy would have faced in the wake of Vatican II. This project is currently in the planning stage.

GLORY STORIES: Theoni wrote a script to tell the story of Our Lady of Champion for the much-beloved Glory Stories series produced by Holy Heroes.

JELLYBEAN: A Baby’s Journey to God is a picture book for families grieving after baby loss. It was written by Theoni and her husband, Bastian, after the loss of their little girl in 2020. As part of her outreach, Theoni has done over a dozen interviews and talks on baby loss.

BABY LOSS MEMORIALS: Theoni has several beautiful memorials to her 4 lost babies that generous Catholic artists made for her family. She worked with Baritus Catholic and Catholic Paper Goods to create healing works of art for other grieving families. Prints, stickers, and other items are available on Etsy.