In the script, the Sharon Valeri on the ship apparently did not know she was a Cylon (I did read the leaked script and saw a couple of following interviews with RDM).
I beleive one of the subplots for any upcoming series would include the possibility of her becoming aware she was actually Cylon, and have a conflict with her human attachments and feelings and what she suddenly discovers she was. Formula stuff, I think; but it might be interesting to see if they can pull it off without resorting to cliche'.
I am
Dawg