St. Teresa of Kolkata, well known as Mother Teresa, founded the Missionaries of Charity congregation and served poor, marginalized and dying people in India and around the world. Here are links to articles about her published in National Catholic Reporter and Global Sisters Report.
St. Teresa of Kolkata will always be 'Mother Teresa, pope says
Mother Teresa could always face up to the situation, a first-hand account
30 minutes with Mother Teresa changed me
How do you get Mother Teresa to stop praying?
Saint of darkness: The path to canonizing Mother Teresa
The mercy-filled life: Mother Teresa embodied what Pope Francis teaches
Mother Teresa feature series page