Indian nuns from the Catholic Order of the Missionaries of Charity walk past the Mother House on the eve of the canonisation of Mother Teresa 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