Though there seem to be no specific clues relating to her. I can’t say I am thrilled with your list of 13 points:

1. Whether he really said it’s somebody not in the photo remains a hot item of debate, but I agree, if it’s true it raises her chances (along with Gaeta, Joe Adama etc.)

2. This was talking about the 4 revealed, not the 5th one.

3. Wow. I find it very hard to read this as a clue for Dualla. It’s strongly a clue for Baltar. Why does she tell him “you were right?”

4. Races are just patterns of appearance based on sexual selection, not archetypes. On the other hand, women are indeed under-represented.

5. The numbering was assigned at random. Many have debated these numbers, not sure why you have not seen it.

6. One of the popular clues that points to several characters. However, in a retcon, it seems that Tamara Adama is a Cylon.

7. How does this point to Dee?

8. Virus affects S7, we don’t know about F5.

9. Again, hardly a clue for Dee.

10. Yes, a popular clue for her, the only clue specific to her.

11-13. About Starbuck etc. Note that they are not from another galaxy. M8 was an object known to Adama, which means they live within about 10-20,000 light years at most.

People seem to suspect Dee mostly, as you do by process of elimination. I would like to see some clues that actually point specifically to her. Her name is not enough. Why is she in shadow, hungering for redemption that will only come in great pain?