Josephine's Journey. The Quade Series, #3

Josephine has come west in search of the son she hasn't seen in far too many years. Once she arrives in Montana, she is thrilled to find that her son is about to be married. Once her grandchild is born, she agrees to take over the duties of teaching the children of the reservation in exchange for being able to stay close to her son. George Roberts came to Montana to judge not only Crooked Snake, but also the Indian Agent, Simon Leary.
He never expected to a woman who would become important in his life. When he returns to Denver and his duties there, he realizes that Josephine is the woman he wants to be his and his alone. Before that can happen, he has to prove his love to Josephine when she's not certain that she wants to commit to him.