SANDRY'S BOOK (Tamora Pierce)

Four young misfits find themselves living in a strictly disciplined temple community where they become friends while also learning to do crafts and to use their powers, especially magic. One is of noble birth and one is a street urchin brought up to a life of thieving. One is a trader and one a merchant girl. But they all have something in common. They each possess a strange power.

Having been sent to Winding Circle Temple, Daja, Briar, Tris and Sandry begin to feel that they have finally found a place where their magical gifts are respected. As they learn and grow in their skills, they must face down everything from pirates to strange diseases.
Gifted young weaver Sandry, Briar, a former thief with a way with plants; Daja, an outcase gifted at metalcraft; and Tris, whose connection with the weather unsettles everyone, including herself. The four misfits are taught how to use their magic, but when disaster strikes, it's up to Sandry to weave together four different kinds of power to save herself, her friends, and Winding Circle.