A wonderful overview of her life at Praying for Grace. She can also be considered a patron of the interior life, as well of those who struggle with prayer. Here's a write up (and video!) at Catholic Tube.
The library at St. Paul's (the old chapel) has some beautiful stained glass windows of the patron saints. Here's St. Theresa as depicted in the old chapel.
And this detail summarizes, I feel, that oh-so-nebulous thing called Paulist spirituality!
This prayer by St. Theresa is very popular. The Taize setting is extremely powerful (we prayed it at Lauds this morning). I first heard it at WYD2002 in Toronto, at the concluding Mass outdoors, as hundreds of thousands filed silently across the vast field to receive Holy Communion.
Nada te turbe, nada te espante. Quien a Dios tiene, nada le falta. Nada te turbe, nada te espante, sólo Dios basta.