In certain comic continuities, Gwen Stacy is alive. However, her status has changed throughout different comic arcs and reboots. Sometimes she's been brought back through various means in the fictional comic world.
Gwen Stacy is not trans in the comics. The character has been presented in a conventional gender role throughout the comic series. There have been no storylines suggesting otherwise.
Gwen Stacy was an important figure in the Spider-Man comic universe. She was smart, kind, and had a complex relationship with Peter Parker. Her death had a huge impact on the story.
Peter Parker is one of the main characters. He has a deep connection with Gwen. Her father is also important. He's often concerned about Gwen's safety in the dangerous world of the comic. And there are the villains like the Green Goblin who play a major role in the story.
Some fanfictions focus on Gwen Stacy's relationships. There are stories that explore her relationship with Peter Parker in more depth. It could be about their early days of getting to know each other, the little moments of romance and the challenges they face as a couple in a world full of superheroes and villains.
One idea could be a crossover where Gwen Stacy, through some magical accident, is transported to the Harry Potter universe. She could use her scientific knowledge and acrobatic skills to help the students at Hogwarts in a time of crisis. For example, she might figure out a way to use her knowledge of physics to counter a dark magic spell that's causing chaos in the school.
One great fanfiction could be where Gwen Stacy survives in an alternate universe within the 'Spider - Man Homecoming' setting. In this story, she could use her scientific knowledge to help Peter Parker with new tech - based villains. Maybe she creates a device that can neutralize the bad guys' weapons.