If you give your Black Hole positive feedback and clear concise directions, you may find her becoming more productive. Many Black Holes are in need of on-the-job guidance that only takes a moment to provide.
1. Do take an active interest in her tasks and projects.
2. Do encourage her to move on when she sufficiently completes a task.
3. Do invite her input on other's work as a way of showing that you value her opinions.
4. Don't forget to document her increasing decision-making skill and independence.
5. Don't let a good call go unnoticed.