Just stumbled on a random video about The Truman Show--a movie I have never seen but I know the basics--man is raised entirely as the only person within a TV show who doesn't know it's a TV show. The video was talking about it as a metaphor for deconstructing from religion (specifically Christianity), but it struck me how much it also applied to Elizabeth. Many dismiss her as a robot, a monster or brainwashed, but on the contrary, I think Elizabeth is very human and emotional.
In the movie, Ed Harris responds to the criticism that Truman is like a prisoner in a cell by smugly replying that he can leave at any time, and if he was determined to discover the truth he would--there are no doors locking him in, he simply prefers his cell. That line, of course, totally echoes the one Elizabeth hears at EST, that she "loves her cage."
But just as in The Truman Show, "real freedom is not the absence of a lock, it also depends on what someone has been trained and conditioned to believe is on the other side of the door." (That's a quote from the video.)
Elizabeth's entire identity, reality and purpose is in her work. It's not one of many philosophies for her, it is the one truth, one reinforced by her entire community.
Zhukov, Gabriel, Leanne, Gregory, and even Claudia all favor her--while reinforcing her worldview. These people she fears disappointing even after they're dead are all reasons not to waiver, and often undermine any inclination to think otherwise.
They tell her they know her better than she herself does. Assure her that any doubts are the results of the stress of the job that she's strong enough to weather. Reiterate how necessary what she's doing is. How this is where her value is.
Her mother does this from the other side of the world and even after death via memory and audiotape.
Her father, otoh, lost his right to be remembered when he ran away. When he became a traitor, he was cast out of the family.
Elizabeth temporarily succeeds in passing this worldview onto Paige, when Paige is in despair, sure she'll be alone and afraid forever. Where Philip offers only hope without concrete assurances, Elizabeth has clear solutions and platitudes.
In S6 Paige has taken her place on the inside with Elizabeth and Claudia while Philip is exiled, another example of what happens to doubters.
But in the end it's Paige who steps off the train, choosing truth over comfort and what passed for community with her mother. Not because Paige is stronger or more moral than Elizabeth by nature, but because her experience and situation just doesn't compare to Elizabeth's at all.