She is the Keeper of Restoration. And due to her nature as a Keeper, multiple versions of Nutra Do Hiana exist. One version of Nutra Do Hiana became one of Gazel's pact gods. Nutra can restore and heal herself and others. She can even bring back people from the dead if they were killed in front of her, in a similar fashion to the Ingall spell. She can also use her power to heal a damaged source. However, she cannot interfere with sources or heal something that is considered to be in order. (Source: Maou Gakuin Wiki)