As Tyricon hinted, Astaroth was only fairly recently interpreted as a male or a demon. The proper name for the being to whom you refer is Inanna, the Sumerian goddess of Love and War.
A source I have read from recommends calling up a Phantasm, a multi-sensory image of Inanna. Research the goddess and get a sense for your own personal attunement to her, then try to conjure up a five-sensory representation of her as vividly as you can. If you desire more details, I can link you to her full article on Phantasms.