Mother Teresa was not the leader of any religion as she was a practicing Catholic. She was the founder of the Missionaries of Charity and headed the order for many years.
Both of Mother Teresa's parents were devout Catholics.
Mother Teresa was a Catholic.
Mother Teresa's family followed the Roman Catholic religion.
Mother Teresa was known and respected world wide but was not a political leader.
She was head of the religious order that she had founded: The Missionaries of Charity.
Catholics
Mother Teresa was baptized as Catholic when she was one day old. She remained a Catholic her entire life.
Mother Teresa was a Catholic only but worked to help Hindus and Muslims.
Christian Mother Teresa was born into a Catholic family and remained a Catholic her entire life.
because she helped loads of people
Mother is the title given to the leader of a religious order - Mother Superior. Also, Mother Teresa was originally a Sister of Loreto, they are given the title Mother (as opposed to Sister) as soon as they make their final vows, so Mother Teresa was known as Mother even as a teaching Sister.
Her family was Catholic. Mother Teresa was baptized a Catholic the day after her birth and remained a Catholic all her life.
Mother Teresa was a Catholic her entire life. However, she worked with people of all faiths and never refused her help to anyone who held different beliefs.