She is patron of the sick and poor.
St. Maria Goretti and St. Philomena are two of the female patron saints of children.
I can find no patronages assigned to her.
According to the Patron Saint Index the patron saints for vocations are St. Alphonsus Maria de Liguori and the Infant Jesus of Prague. There is no St. Teresa among them.
Patronage of Maria Mazzarello against bodily ills against sickness sick people
St. Maria Goretti is often considered the patron saint of teenage girls. She is venerated for her purity, forgiveness, and commitment to her faith, making her an inspiration for young women around the world.
I assume you are referring to St. Maria Goretti who died before her 12th birthday rather than submit to a rapist. She is an excellent role model for chastity of young people.
Saint Philomena and St. Maria Goretti are female patron saints of children.
St James the Greater, the Apostle is the patron saint of Rheumatism, Arthritis, and RA as well as being the patron of Spain and Pharmacists. St. Alphonsus Maria de Liguori suffered tremendously from a crippling arthritic condition and some say he is as well. However, the R.C. Church recognizes St. James.
St. John of God is the patron saint of heart patients. St. Raphael is the patron St. of healing and medicine. St. Luke, St. Cosmos, St. Damian, and St. Panteleimon are patron saints of medicine.
Patron saints of actors are St. Genesius and St. Vitus and the patron saint of actresses is St. Pelagia the Penitent.
The patron saints of actors are St. Genesius and St. Vitus. The patron of actresses is St. Pelagia the Penitent.
As far as I can determine, there is no special patron saint of cheerleaders. However, there are a number of other female saints who could help you: St. Lucy, St. Agnes, St. Philomena, St. Maria Goretti, for example. Even St. Teresa of Avila would be a good choice. During her teenage years she was quite rebellious and preferred boys, fine clothes and socializing to a religious life.