Indian nuns from the Catholic Order of the Missionaries of Charity walk past a picture of Mother Teresa on the eve of her canonisation in Rome, in Kolkata on September 2, 2016. As the Vatican prepares to declare Mother Teresa a saint on September 4, in the Indian city where she rose to fame, claims of medical negligence and financial mismanagement at her care homes threaten to cloud her legacy. / AFP PHOTO / Dibyangshu SARKARDIBYANGSHU SARKAR/AFP/Getty Images