Enheduanna was known for her deep connection to Inanna, the ancient Sumerian goddess of love, fertility, war, and battle. This goddess was a big part of her sacred writings.
Inanna was known for both her sexual prowess and her battle fierceness. While Inanna is the name by which Enheduanna called to her, this goddess was also known as Ishtar.
Inanna was called the Queen of Heaven and she was affiliated with the morning and evening stars, which is why she is often pictured with an eight-pointed star and also represented by an eight-pointed star.
She was a major deity, with temples in most cities, and she can be seen in many artifacts. Her consort was Dumuzid (and in the form of Ishtar, he was known as Tammuz). There is an ancient myth that he was dragged to the underworld and that Inanna had to strip off seven layers of clothing and jewels and pass through various tests to go there to claim him.
Enheduanna did not write that myth but she wrote of Inanna's suffering, as well as her special powers and grace. She also wrote of her wrath.