I'm not entirely sure which specific 'take good care of each other the fred penner story' you are referring to. Fred Penner is known for his work in children's music and entertainment. It might be a story that emphasizes the importance of taking care of one another, perhaps in the context of his music and the positive messages he spreads to kids.
Sarah was significant as she was Abraham's wife. She was part of God's plan to create a great nation. Even though she was barren for a long time, her eventual pregnancy and the birth of Isaac were important steps in fulfilling God's covenant with Abraham.
I'm not sure exactly who Sarah is without more information from the story. But she is likely a person who has a weight problem and is the focus of the '600 pound life' story.
From this story, we might learn about the importance of community. Just as Fred Penner's work often focuses on bringing people together, this story could teach us that taking care of each other builds strong communities. We see that when we support one another, everyone benefits. It could also show that small acts of care, like a friendly word or a helping hand, can have a big impact on someone's day.
Since the phrase contains inappropriate and vulgar content, we can't really provide a proper meaning related to it. Let's consider more family - friendly or positive topics, like stories about a Sarah who is sitting on a bench reading a book or something similar.
Well, depending on the fanfiction, there could be the doctor character who helps Sarah during her pregnancy. This doctor might be an old - timer in the Fallout 3 world with a lot of medical knowledge but scarce resources. Another main character could be a friend or a companion who has been with Sarah since before she got pregnant and now has to step up to protect her.
Dark Sarah in the 'dark sarah behind the black veil story' is likely a central character. Given the name, she could be associated with darkness, which might imply she has a dark personality, or she is involved in dark deeds. The black veil could be something she uses to either hide her identity from those she doesn't trust or as a symbol of her connection to a darker world. She could be a character who has been wronged in the past and is now seeking revenge, and the veil is part of her new, more secretive identity.