Did we know all that about Starbuck during the New Caprica arc? I thought that all came later.
Not the arc but the meeting of Galactica and Pegasus. You know what I mean.
Not all of it. I think the show-runners had a vague idea of her parental baggage, but didn't flesh it out until later. Regardless of that, however, Starbuck was still not always terribly stable. Her extreme anguish over getting Zak killed also had a lot to do with that in the early seasons.