Possible Clues:

• Girl runs into river -- start of adventure
• Mother --, RC nun and missionary
• Businesswoman/philanthropist ___ Heinz Kerry
• Beloved Mother of Calcutta
• Nun who won a Peace Prize
• Mother ___ (nun who won a Nobel Peace Prize)
• Mother who won the Peace Prize
• Carmelite nun
• May's not hard: a saint?
• Mother who was sainted in 2016