When did St. Veronica become a saint?

Answer 1

The official canonization process did not come into play until more than 1000 years after Veronica had died. She would have been proclaimed as a saint by the early Christian community shortly after she died.

Answer 2

St. Veronica was declared a saint before the official canonization process was instituted in about the 12th century. She would have been declared a saint to the bishop by those who knew him best and were familiar with her life and merits. The local bishop would them make the decision. Today only the pope can declare saints after years of study by the Sacred Congregation for the Causes of Saints in the Vatican. The church does not create saints. Only God can do that. The Church "screens" candidates for sainthood to determine if they had a life worthy of emmulation. In other words, do they make good role models. Also, the Church has to be assured that the person is actually in Heaven. That is the reason that today a number of miracles must be verified before a person can be declared a saint.