In most cases, Hetty Fether is considered fictional. Stories like this are often crafted by the imagination of the author to entertain and engage readers rather than being based on real events.
It's hard to say. Maybe if there's enough interest from fans and a good business case, they could come back. But there are no definite indications for now.
Definitely. Aunt Hetty on Matrimony is indeed a short story. It typically has a limited number of characters and a focused storyline centered around matrimony.
Perhaps a fanfic where Hetty's sister is an old acquaintance of one of the NCIS LA agents. She shows up with a mystery from their past that they all have to solve together. This could lead to flashbacks and revelations about the agent's early days, and how Hetty's sister was a part of it all.
The plot could be that Hetty's sister, an original character (oc), comes to work with the NCIS LA team temporarily. She has a unique skill set, like being an expert in a particular type of forensics that the team lacks. However, her presence also stirs up some old rivalries within the agency because of her connection to Hetty.
One great NCIS LA Hetty Daughter OC fanfic is 'The Hidden Legacy'. It delves deep into the character of Hetty's daughter as an original character. The story is filled with intrigue as she gets involved in the NCIS LA operations in a unique way. It has great character development and a plot that keeps you hooked from start to finish.
Well, it might be that the OC has a personal connection to an ongoing case. Hetty, being the shrewd character she is, hires the OC to use that connection to the team's advantage. Perhaps the OC has a past with a criminal organization that the NCIS LA team is currently investigating, and their inside knowledge could be crucial.
The main thing is the exploration of new relationships. Since the daughter is an OC, the writer can create unique dynamics between her and the existing characters. For example, her relationship with Hetty can be explored in ways not shown in the original show. It could be a strained relationship or a very close - knit one depending on the writer's take.