Enid is indeed alive. The storylines haven't depicted her demise yet. Usually, characters' fates change based on the plot developments, but so far, she's still part of the comic world.
The relationship could be developed through shared experiences. For example, they could fight side by side against a common enemy, which builds trust. Then, small moments of kindness, like Carl sharing his food with Enid or Enid patching up Carl's wounds, can deepen their emotional bond. Eventually, this leads to their physical relationship as their feelings reach a boiling point.
They often feature exciting adventures in a school setting. The characters are usually students with distinct personalities. There's a sense of camaraderie and also some gentle lessons about friendship and good behavior.
Another characteristic is the writing style. A well - written fanfiction will have good grammar and flow. It should be able to draw the reader in and make them feel like they are a part of the world of Enid and Wednesday. It might also include some elements of the original show's setting, like Nevermore Academy, to give it an authentic feel.