Three stories illuminate Mary Breckridge and her ministry through the stories of people she served. I found it helpful that the stories are told by both male and female characters and include lots of children. An excellent afterword gives a brief biography. Historical/ biographical stories are valuable for young children in exemplifying the character we are seeking for them to develop. These stories in particular are helpful in creating a sense of gratitude. 
 Two cautions: 
 1) Austere living conditions and issues of life and death may be a bit much for sensitive children. At 53 pages, it's not a long read for teachers to preview. 
 2) While there is a Christian perspective to this work, and we see Christianity lived out through Mary's action, this is not a preachy book. That is a general advantage. However, in Chapter 3 "Ireland of Scotland," a father and mother have an argument in which the father misuses faith (God will protect us) to avoid something of which he is afraid (needles & immunizations). Children could probably benefit from either some edited reading or explanation.