The story of Alma the Younger is a significant one in certain religious scriptures. Alma was a figure who had a remarkable conversion experience. He went from being a wayward son causing trouble to having a profound spiritual awakening. This transformation led him to become a great teacher and leader, guiding others in the ways of righteousness.
Most likely not. Usually, if it were based on a true story, there would be some indication or background information given. But for Alma Filcott, I haven't come across anything suggesting it's true.
The theme of redemption can also be found in some alma fear fanfic. Alma might be trying to atone for something in her past that is related to her fear. Additionally, the theme of isolation is common. Fear can make a person feel alone, and in these fanfics, Alma may be isolated from others because of her fear, and then has to find a way to break free from that isolation.
One common theme is friendship. Naruto is known for his ability to make friends and in fanfictions with Alma, they often form a strong bond. Another theme could be power - up. Just like how Naruto gains new powers throughout the original series, in these fanfictions, Alma might help him achieve new levels of power or vice versa.