While we have copies of all of Hildegard's works, the illuminated copy of her theological work, Scivias,is lost.During World War Two it was sent to Dresden for safe keeping, but this was unfortunate, as the Allies bombed Dresden and the city became a fire storm. Compared to the lives that were lost, a book is a small, though regrettable matter.
It is said that she wrote more prolifically than any women of her time, but she wrote more than most men as well. It has been noted [ www.hildegardeofbingen.net ] that while there were always influential women, most wielded influence through their menfolk, but Hildegard was a woman whose influence rested on her accomplishments, and these grew out of her profound religious experience that came to her as visions. For many years she kept the visions to herself until in one vision God told her to write them down and they became the basis of her works of theology.
There were three long theological works: the Scivias [Know the Ways] Vitae Meritorum [Of Life's Merits, Liber Divinorum Operum. Each one details her visions, which are then interpreted in terms of her completely orthodox theology. There was nothing uncatholic about Hildegard. Each of these works was written by hand in Latin, and as one early image of her seems to show her as an illustrator it is likely that she was talented in illustration as well. She also wrote the Ordo Virtutum, n allegorical morality play, possibly the first of its kind.
Yet her experience in nursing led to her to take an interest in medicine, and this meant botany, so she wrote works on natural medicine. She broke new ground in writing about women's subjects, one of which was gynecology, so it is likely that she and the nuns were dealing with the health of women in their locality. She also touches on sex, writing on the female orgasm, about which none seems to have written before. Yet she also found time to compose music. She composed within the plainchant traditions of the Catholic Church. Still much of her music survives.
Besides this she found time to found two convents, one at Rupertsberg and one at Eibingen, which replaced an earlier Augustinian foundation. This abbey still survives today.
Along with this came at least four hundred letters to the leading people of the age, including the following: various popes, Emperor Barbarossa, Saint Bernard of Clairvaux, Henry II af England and his queen Eleanor. All these letters give advice. And this is in addition to her being the spiritual leader of an abbey, responsible for guiding the nuns in their religious life.
The energy to work as hard as this derives from her deeply spiritual life, and this sort of work rate is not unusual among saints, for they are energized and motivated by God's power. Yet if you examine the image above you see her bearing a feather, which symbolizes what she saw as her weak body, for she was always conscious of her frailty.