I'm sorry, but I don't have specific 'lucy gets killed fanfiction' stories to recommend. You could try searching on fanfiction platforms like Archive of Our Own or FanFiction.net.
One possible motive could be revenge. Another character might have a grudge against Lucy for something she did in the fictional world, like betraying a group or stealing something precious.
In certain 'lucy gets burned fanfiction', the story could take a more magical or fantastical turn. Perhaps Lucy's burn was caused by some sort of magical accident. As she heals, she starts to notice strange powers emerging within her that are somehow related to the incident. This could lead to an adventure where she has to learn to control these new powers while still coming to terms with the burn and its impact on her life.
Lucy could face isolation. People in the fanfiction world might avoid her, and she could be left all alone. This could also lead to her losing confidence in herself as she is constantly being blamed for something she didn't do.
Maybe it could be about how her friends take care of her. They might bring her medicine, make her soup, and stay by her side to comfort her while she's dealing with the fever.
Yes, there might be some interpretations of such a concept in a family - friendly way. Some fanfictions might focus on the relationship development between Laxus and Lucy in a more innocent, platonic sense and then explore the idea of a family - like bond without going into inappropriate content. For example, it could be about them becoming very close friends and then taking on a parenting - like role for an orphan or something similar.
I don't know who the author of this fanfiction is. There are so many fanfiction works out there, and without more context or research, it's difficult to determine the author.
I'm not sure specifically as there could be many interpretations. It might be about a character named Lucy obtaining all 12 keys in a fictional world. Maybe these keys are magical or important items that are crucial for a certain quest or storyline within the fanfiction.
There could be her family members. Her mother might be the one constantly checking on her temperature and making sure she is comfortable.
Obviously, Lucy is one of the main characters since the fanfiction is centered around her getting burned. There might also be characters like her family members, such as her parents or siblings, who could play important roles in her recovery process.
Another powerful mage from a rival guild. This mage could see Lucy's revenge as an opportunity to weaken Fairy Tail and offer their assistance.