Ok Paige is retarded

I don't think she's retarded, I think she is a young idealist looking for an ideal to uphold. When she first became involved with the church, she was just as dogmatic. Her mother has made serving the Soviet cause feel much more critical and relevant than building houses for the homeless or some other societal improvement effort, so that's what she's hooked on now.

One of the reasons warriors tend to be so young is that the ability to engage in higher reasons and logic is the slowest part of our intellect to develop and the last to mature; it doesn't finish until we are about 25. It's one of the reasons that people in their teens and early 20s have such high rates of death by accidents in things like drug use, drinking, reckless driving, etc. It's also why they are more apt to join cults

At that age, we still tend to trust our parents more than we might care to admit. We will believe them until we have proof that we can't. All she knows is what her mother and handler tell her about the nature of the work. Up to this point at least, they've played up how the West has wronged and slandered the East and downplayed any dangers associated with being an agent.

All Paige knows is that her parents have been doing this for 20 years and are just fine. She never seen either parent coldly murder someone and thinks that the general shot himself out of shame, not that her mother killed him. Paige thinks that her job will be to work in the US government in order to gather intelligence and pass it along to her handlers. It's not until this week's episode (05/09/2018) [spoilers] that the idea that this job could be very dangerous and she could be killed is raised in a concrete, explicit manner. [/spoiler]. Even then, Paige, unsurprisingly given her age, is quick to say she's willing to commit to this cause for the rest of her life because physically she doesn't have the intellectual capacity to fully process the concept of "for the rest of your life".