When did Saint Cecilia first notice God?

Saint Cecilia is considered the saint patroness of musicians. She is one of the most famous Roman martyrs. The story that is told about her is that she was a noble Roman lady that before consummating her marriage pleaded her husband to respect her virginity, as she was able to see an angel that would punish him otherwise. After that she was tormented by Roman prefect Turcius Almachius, but despite her bodily harm, she was able to survive for three days, enough time to ask the Pope to convert her home into a church.