The time had come once again for Ayumi to devour the energy from another star. Her rebirth as a so called "Star God" had been kept a secret for the time being. And because of this, Erich escorted her with his personal starship outside of the Milky Way, and to the Sagittarius Dwarf Galaxy, where in the previous timeline he had waged a bloody battle against the sages.
It was obviously not the same star system. In fact, it was an old and dying star within a system completely uninhabited by any life forms. Tia had marked stars like this across the Milky Way, and recently its stability dwarf Galaxies, in preparation for Ayumi's new and strange physical needs.
Her plans were to harvest these star systems of any and all resources they may have, and then allow Ayumi to swallow what remained of their stars, essentially preventing a supernova.