There's not enough information to really know who Lucy specifically is. She could be just a regular reader of fanfiction who took the time to rate this piece as M. Maybe she's part of a fanfiction community where people rate works to help others know what to expect.
It's hard to say exactly who Lucy is. She could be a moderator or an experienced reader in the fanfiction world. Her rating of M implies that she has some knowledge about what kind of content should be labeled as such. It's possible that she has been reading fanfiction for a long time and has a good sense of when a story has mature elements, whether it's in the way the story is written, the themes it explores, or the relationships between the characters.
Rated M often indicates that the fanfiction has content that is considered more appropriate for a mature audience. Maybe Lucy, being a reader or a reviewer, felt that the fanfiction had elements such as strong language, intense or disturbing themes that led her to rate it M. It could also be that there were some sexual undertones or implications, but not explicit, which pushed it into the M - rated category according to her.
I'm not sure if there is a specific 'lucy x sting' fanfic rated M. You could try searching on popular fanfic websites, but make sure to follow their terms and conditions.
Lucy could be an ordinary girl who stumbles upon the dragon by accident. Maybe she was just exploring an old forest or a mysterious cave when she came across it.
One popular 'Natsu and Lucy' rated M fanfiction could be 'Flaming Hearts'. It delves deep into their relationship, exploring their emotional and physical connection in a more mature way. However, different people might have different favorites based on their own interpretations of the characters.
You can start by looking on popular fanfiction websites like FanFiction.net or Archive of Our Own. Use their search functions and type in 'Natsu and Lucy' along with the 'rated M' tag. This should bring up a list of relevant fanfictions.
Lucy may also come across ancient warriors. For example, she could meet a Spartan soldier and be amazed by his combat skills and strict discipline. They could have a brief encounter where the Spartan is curious about this strange girl from another time.
Other dragon slayers could be her potential allies. They might recognize her skills despite her being a princess. Also, magical creatures who are enemies of the dragons, like phoenixes or griffins, could side with her. And some wise old wizards or witches who see her potential might offer their help.
Lucy could be developed further by exploring her family background more deeply. Maybe she discovers some long - lost relatives who are also involved in magic. This could add new layers to her character. Another way is to show her struggling with her insecurities about her magic abilities and then gradually overcoming them through various challenges.
Lucy Letby in the Lucy Letby story is a nurse who has been convicted of the most dreadful crimes. She was part of a neonatal unit's staff, but instead of providing care and protection to the babies, she did the opposite. She was involved in actions that led to the death and harm of multiple infants. Her actions were finally exposed through investigations, and she now stands as a symbol of the worst - case scenario in a medical care setting.
The 'Lucy' in the 'lucy in the sky real story' is rather ambiguous. It could be a symbol that Lennon came up with. It may have been a composite of different ideas or experiences. Since the song was related to psychedelic experiences, it might not be based on a real - life 'Lucy' but rather a concept that emerged during the creative process, perhaps something that represented a certain state of mind or a dream - like vision.