What did Kateri Tekakwitha do?

Answer 1

There have been a number of miracles attributed to Bl. Kateri but most occurred shortly after her death and no one is still alive to verify them. The first occurred at the moment of her death. Her face had been badly scarred by smallpox when she was but 4 years old. At the moment she died her skin became blemish free as the scars disappeared. A number of people claimed to have been healed when they visited her grave soon after she was buried. All these alleged events led Pope John Paul II to declare her Blessed in 1980. Now the Sacred Congregation for the Causes of Saints in Rome is investigating evidence that documents what could be the final miracle needed for canonization. All the information is being kept secret until the Congregation reaches a decision. Her canonization could be near!

Update:
"On December 19, 2011, Pope Benedict XVI approved the second miracle needed for Kateri's canonization. The authorized miracle dates from 2006, when a young boy in Washington state survived a severe flesh-eating bacterium. Doctors had been unable to stop the progress of the disease by surgery and advised his parents he was likely to die. The boy received the sacrament of Anointing of the Sick from a Catholic priest. As the boy is half Lummi Indian, the parents said they prayed through Tekakwitha for divine intercession, as did their family and friends, and an extended network contacted through their son's classmates. A Catholic nun, Sister Kateri Mitchell visited the boy's bedside and placed a relic of Tekakwitha, a bone fragment, against his body and prayed together with his parents. The next day, the infection stopped its progression." FromWikipedia

Kateri was canonized on October 21, 2012, by Pope Benedict XVI.

Answer 2

Kateri Tekakwitha professed a vow of virginity until her death at the age of 24. She was known for her virtue of chastity and corporal mortification of the flesh, as well as being shunned by her tribe for her religious conversion to Catholicism.