Late Bloom. The Juniper Hollow Witch, #1

Rosalind Whitlock has spent twenty-two years being reliable. Then, inside one bad year, her husband leaves and her job is "restructured" out from under her, and the only thing left to her name is a rambling house in a coast town she barely remembers, willed to her by a great-aunt she met twice. Roz drives up to Juniper Hollow to sell the place and leave. Instead she finds a house that stays warm without a furnace, a large gray cat with opinions and no intention of being rehomed, and a town of people who greet her like they have been expecting her for years.
Because they have. The Whitlock women have always been the town's Hearthwardens, keepers of the old boundary that hides Juniper Hollow's quietly uncanny residents from the world, and Roz's own magic is waking at last, late, exactly when the failing ward needs an heir. Then a beloved old man is found dead at the shore stone, and the town calls it the ward giving way. Roz knows better. Someone is cutting the boundary-stones on purpose, someone with an old grievance and new money, and only a Warden can read what really happened.
To save the town that is becoming, against all her instincts, the first place she has ever belonged, Roz will have to stop apologizing for taking up space, learn what she is, and decide whether being needed is a trap or a homecoming. Late Bloom is the first Juniper Hollow Witch novel: a warm, witchy, cozy-paranormal mystery about starting over at midlife, chosen family, a very good cat, and a slow-burn worth the wait.
For readers who like their heroines over forty, their magic homemade, and their small towns full of gentle secrets.