When Calls the Heart (Canadian West Bk 1) by Janette Oke

I really enjoyed this book. Set in Canada in the early 1900s. Elizabeth, a teacher in Ontario is encouraged to visit Alberta where her half brother resides with his family. After consideration Elizabeth makes the trip West, to rural Canada where she accepts a teaching post. She meets and falls in love with a Mountie called Wynn, who firmly believes that he should not marry because of the harshness of the terrain, but can Elizabeth encourage Wynn to change his mind.