Final answer:
Chiara Margarita Cozzolani served as the abbess and prioress and was a renowned composer at the convent of St. Radegonda, but there is no historical record of her being a director of choirs.
Step-by-step explanation:
The services that Chiara Margarita Cozzolani provided for the convent of St. Radegonda were indeed multifaceted. She served not only as the abbess and prioress, managing the convent's affairs, but she was also a renowned composer of sacred music. Unfortunately, the option of 'director of choirs' is not substantiated by historical records, so it cannot be confidently affirmed.
It is worth noting that Cozzolani took the veil at a young age and spent most of her life within the convent walls. Her music, highly respected during her lifetime, has since gained recognition for its complexity and expressive depth, contributing significantly to the baroque era's religious music canon.