It is a minor issue, especially since it can not be solved at this stage -- and I certainly don't wanna get in the way of your questions to SoCal: but my gut feeling is that, at most, there were agents/actors who for a short while or occasionally impersonated
a few imaginary characters: but those characters never really existed
Probably I'm wrong but I tend to think that there never was a real "Barbara Olson" born "Barbara Kay Bracher".
There never was a "David Angell" married to "Lynn Angell", etcetera.
The characters, like all the other vicsims, are essentially imaginary
: only in certain cases they were impersonated or "used" by actors to reinforce the credibility of a particular story. I don't see any impediment in imagining that Olson was really one of these agents/actors, her alleged being "sharp" or "convincing" according to SoCal proves nothing in this sense.
Certainly I am not 100% convinced of this, as it is a gut feeling which is not really being driven by definitive clues. It mostly comes from the cumulation of bad quality portrait images, scarcity and standardization of biographical notices, and other incidental details, like the birthday of "Theodore Olson" being 11th september 1940. Too little rings true, too much rings false around these stories... And there are other significant circumstances: for instance the fact that all appearances of Barbara Olson, like the terror attacks of Al-quaeda pre 9/11, are documented in the years very close to the date of 9/11, in other words just in time to impress in the public eye a certain reality, with the less effort possible before the public forgets again.
To sum up, my impression is that there is not a "Barbara Olson" still out there today under a new identity, but rather an agent who, at a certain moment of her disgraceful career, impersonated that fictitious character.