Tsuihou Sareta Hazure Seijo wa Cheat na Madougu Shokunin de Shita

From Manga Mogura: A handicraft-loving office lady is reincarnated as a young apprentice saint in a fantasy world. Enrolled in a theological school to become a saint, she's deemed worthless and exiled to the frontier where she decides to life a slow-paced life, crafting magical tools. But the items she creates are unexpectedly powerful.