One possible reason could be extreme emotional distress. Maybe she feels like she has failed Sasuke in some way, like not being able to save him from the darkness, and she self - harms as a form of punishment. Another reason could be in a situation where she has to make a sacrifice. For example, if Sasuke is in danger and her cutting off her arm is the only way to activate a certain power or jutsu to save him.
It could make Sasuke more protective of Naruto. Sasuke has always had a complex relationship with Naruto, and seeing him lose an arm would stir up some deep emotions. He might feel guilty, especially if he was somehow involved in the incident that cost Naruto his arm. This could lead to Sasuke staying closer to Naruto and being more open about his feelings.
There's a fanfic where Naruto loses an arm but then trains with an old hermit in the mountains. In this story, he discovers new jutsus that are specifically designed for his one - armed state. It's a really interesting take on his character development and shows his resilience.
I'm not sure specifically which 'woman with one arm leg story' you're referring to. It could be a personal anecdote about a woman who has lost an arm and a leg, perhaps detailing her struggles, how she overcame difficulties in daily life, like learning to walk again or do simple tasks with the use of prosthetics.
First, think about the story you want to tell. It could be a personal achievement, a relationship, or a life - changing event. Then, choose symbols that represent that story. For example, if it's about a trip, you could use a map or a landmark from that place. Sketch out your ideas on paper before going to a tattoo artist.
One common theme is resilience. Naruto having one arm is a major setback, but in these fanfictions, he always bounces back. For instance, he might struggle at first but then finds ways to be as strong as before.
Well, I'm not sure of a specific one off the top of my head. But you could try searching on fanfic websites like Archive of Our Own. Just type in 'Sakura cutting arm Sasuke fanfic' in the search bar and browse through the results. There might be some really interesting ones there.
One popular theme is redemption. The idea that Naruto, even with one arm, can redeem himself in the eyes of those who doubted him. Another theme is the discovery of new powers. Since he has a handicap, he has to find new ways to fight and that often leads to the creation of unique jutsus.