Well, it could be that Stacy is in a relationship within the context of the house. She gives birth to a baby but for some reason decides to leave. Maybe she's facing some sort of personal crisis or conflict within the household. It could be a story about love, family, and the tough decisions people sometimes have to make.
Stacy in the 'Stacy's Mom Story' is most likely the central character related to her mom. She could be a young girl with her own dreams and aspirations. Maybe she is an artist or a sporty person. Her actions and character would probably be intertwined with her mom's story. For example, if Stacy is into painting, her mom's support or lack of understanding for her passion could be part of the story.
I'm not aware of any specific fanfictions exactly like this one. But you could look for fanfictions that deal with themes of unexpected pregnancies, abandonment, or family drama in general. Check on popular fanfiction platforms and search using relevant tags.
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.