Who is Ishtar?

Ishtar is personified in three different ways in three different pieces, two Mesopotamian liturature, and the other is an analysis of one of the pieces. The pieces are The Epic of Gilgamesh and the other is The Decent of Ishtar into the Underworld. The literary analysis about the Ishtar decending into the underworld.
The view in the Epic of Gilgamesh I feel is that Ishtar is spoiled. She asks Gilgamesh to marry her and when he rejects her because bad things happen to all who are with her, and she goes crying to her father, Anu, telling him that Gilgamesh called her a teases and that he should set the killer bull on him. Enkidu and Gilgamesh kill the bull and Ishtar goes crying to her father yet again.
In The Decent of Ishtar into the Underworld, Ishtar is personified as a courageous person going into death without fear and rising out of it again. She is eventually saved by Namtar.
But, I feel that the analysis of Ishtar puts her in a different light. It almost seems as if Ishtar is an innocent child. It may be that marriage is discussed, but I also felt that the account of Ishtar going into the underworld was shortened based on what the analysis talks about.
So I don't know what to make of Ishtar. Is she a spoiled brat, a courageous woman, or an innocent child, and how will this effect what I still have to read in he Epic of Gilgamesh? Vote now in the pole.