She’s a reference to the active principle of the Divine Feminine in deity form. Like a Durga (Pushiva). Seen throughout different cultures in the world from Inanna Ishtar to Babalon (Queen B?). It’s a representation of bringing in the influence of the divine feminine and can me seen in juxtaposition with his other projects (perhaps with the exception of Mer De Nom. Some cans explain her.
There’s a good book that goes into some of these more esoteric aspects of Maynard’s music on Amazon by M Kyndyll Lackey called Beyond As Above, So Below: Understanding Hermetic Tarot Through the Music of Maynard James Keenan. Excellent read and dive into MJKs music as well as the Esoteric threads running through his music.
Also, CC has an explanation on the can.