most of my initial answers were spot on, only got 7 & 8 flat out wrong.
which brings me to:
3. Fourth Minor Bear - presuming the fourth star of Ursae Minoris - Epsilon Ursae Minoris
9. the mother of the mother of - Hemera - yes, Gaia had a mother.
19. women of vengeance - i too though Erinyes, but someone else suggested this and when reviewed by Drew, he did not confirm it, though this person wasn't firm in claiming it. Someone else guessed Erinni, Erynes, Furies in their list, and Drew said some were half marks, but he is only giving credit for correct unambiguous answers. In greek mythology the Erinyes, sometimes spelled Erinys, were the female personification of vengeance. I will stick with my answer of Erinyes(also spelled Erinys - either spelling refers to the same trio).