WARNING! Here be spoilers.
Twas only last night that I finished watching the final season of Battlestar Galactica, and it left me in a quandry. On the one hand I was satisfied with the ending, on the other, very annoyed that an obvious conclusion had not been concretely proven.
Conclusion. The 7th Cylon model, Daniel, is Kara's father, which would make her the first human/Cylon hybrid, instead of Hera. This would explain her knowledge of the musical switch that turned on Tigh, Tyrol, Anders and Tori, and could go some way towards understanding of her resurrection.
As we found out, Hera was able to project, a Cylon trait that allowed her to fully experience any place she could imagine. It could follow that her Cylon heritage allows her to be capable of much more, such as resurrection, if the technology and clones were available to her. This brings me to the conclusion that, if Kara is indeed half Cyclon, her resurrection is due to her consiousness being downloaded into a new cloned body. How this occured though, seemed to be a little too difficult to explain.
So no, she is not a hybrid. Apparently she is an "angel", destined to disappear into the ether on completion of her destiny. This to me, is an unsatisfactory ending for Kara Thrace, a woman who has been through so much conflict in the course of the series, that to give her anything but a conclusive ending is a disservice to her character.
BSG is a show about conflict. Man versus machine, faith versus doubt, belief versus zealotry, but it is also a parable. From Kobol, to Earth and the Colonies, and to the new Earth, it showed us a species incapable of restraint with regards to new ideas, new technologies, and the harm we could visit upon ourselves. A cycle, seemingly neverending, unless we choose to end it ourselves. But even then, it is not wholly of our own choosing, for apparently there is a higher power at work, guiding us towards that point through vision and song.
Which, for a show about belief in a higher power, in destiny, made sense, in as far as it pertained to everyone except Kara Thrace and her frakking resurrection. With the song, it made sense that it turned out to be the coordinates to new Earth, that was divine intervention on a believable scale.
There is the fact that the wildly absurd in television can be more readily believed than the merely absurd, but that does not change the point that though the Caprica Six and Baltar "angels" were only seen by Caprica Six and Baltar, Kara as an "angel" was seen by everyone, could touch, could be heard, could lead an assault team on the Cylon Colony and say goodbye to Anders and Apollo.
Conclusion. She is not an angel, but a resurrected human/Cylon hybrid. As such, perhaps she just ran away from Apollo really really fast.
Other than that quibble, I enjoyed most of the ending and the final season.
Sooo glad Tori got what was coming to her.