One common theme is the exploration of the supernatural. Since Lydia is often associated with the spooky and otherworldly, fanfics usually involve the reader getting involved in her world of ghosts and ghouls. For example, they might go on adventures to haunted places together.
Well, 'Midnight Rendezvous with Lydia' is an interesting lydia deetz x reader fanfic. It takes place during a midnight encounter where the reader stumbles upon Lydia in a graveyard. The story is full of mystery and the slow - burning romance between them is really well - written. And then there's 'Lydia's Unexpected Ally' where the reader becomes an unexpected ally to Lydia in her adventures in the spirit world, which leads to a special connection between them.
One common theme is the clash of different supernatural worlds. Since Lydia comes from the 'Beetlejuice' universe which has its own brand of supernatural, when she enters the 'Twilight' world, there's a contrast in how the supernatural elements are presented. For example, the vampires in 'Twilight' are more 'human - like' in their emotions compared to the more chaotic and unpredictable supernatural in 'Beetlejuice'.
There's also 'Lydia Deetz: Twilight Crossover'. This fanfic focuses on how Lydia's perspective on the supernatural, which she already had from her experiences in 'Beetlejuice', changes when she encounters the vampires and werewolves of 'Twilight'. She starts to question the different rules and hierarchies in this new supernatural setting.
A plot could involve Lydia inviting Beetlejuice to a human party as her plus - one. Beetlejuice has no idea how to act at a normal human gathering and causes all sorts of mayhem, from scaring the guests to turning the party food into strange and otherworldly delicacies. Meanwhile, Lydia has to keep him in check while also trying to show her friends that he's not as bad as he seems. Or perhaps there's a new ghostly threat in the afterlife that only Lydia and Beetlejuice can stop together. They have to put aside their differences and work as a team, which is difficult given Beetlejuice's self - centered nature.
Their relationship could be developed by having them face a common enemy. For example, a more powerful and malevolent spirit that threatens both the afterlife and the human world. This would force them to rely on each other more and understand each other's strengths and weaknesses. They could also develop a deeper relationship through shared interests. Maybe Lydia shows Beetlejuice her love for art, and he in turn shows her some of the more interesting and spooky aspects of the afterlife that she hasn't seen yet.
Well, if we consider Beetlejuice's character, he is already a rather otherworldly being. In a fanfic about Lydia's death, he might react in unexpected ways. Maybe he tries to bring her back, or he has to deal with his own feelings of loss in a way that is very different from how a normal person would. And for Lydia, her death could be a turning point in their relationship, leading to a whole new set of adventures or interactions in the afterlife.
Often, there's a theme of self - discovery. As they interact with each other, both Edgar and Lydia might learn more about themselves. For example, in some fanfics, Lydia might discover a new side of her personality through her relationship with Edgar. There can also be a theme of family, like if they come from different family backgrounds and how that affects their relationship.
The theme of transformation is common in Beetlejuice x Lydia fanfic. Lydia transforms from a normal girl (well, as normal as she can be) into someone more in tune with the spirit world because of Beetlejuice. And Beetlejuice also changes in a way, as he starts to care more about Lydia. This transformation theme adds a lot of depth to their relationship in the fanfics.
It's a disturbing concept. Suicide is a very serious and tragic topic, and using it in fanfic in relation to fictional characters in this way is inappropriate as it can be triggering and disrespectful to those who have been affected by suicide in real life.