Rebekah was significant as she was the one chosen to be Isaac's wife. Her kindness at the well was a sign that she was the right person. Her role was crucial in continuing the family line of Abraham through Isaac.
Yes, there might be. Fanfiction websites are filled with all sorts of creative and often dark or dramatic stories. You could try searching on major fanfiction platforms like Archive of Our Own or FanFiction.net. Just type in the relevant keywords and see what comes up.
It could be Marcel. He has a long - standing relationship with the Mikaelson family, and his connection with Rebekah could deepen during her pregnancy. He might be the one to support her through the difficult times.
It could be revenge. Maybe Bella has some sort of vendetta against the Mikealson family. Perhaps they did something to her or someone she loves in the past, and she sees the daughter as a way to get back at them.
Well, a fanfiction about Finn Mikealson and an OC (Original Character) as mates is quite interesting. It often involves creating a unique story within the world of the Mikealson family. Usually, the writer has to develop the OC's personality, backstory, and how they come to be the mate of Finn. It can be a story full of drama, love, and supernatural elements.
Well, one possibility is that Bella's unique human nature attracts a Mikealson. Maybe her strong will, like in the original Twilight series, catches the eye of a Mikealson who is used to more submissive or less complex beings. They could start off as enemies, with the Mikealson initially seeing Bella as just another human to toy with, but then gradually fall for her unique charm.
Well, it depends on how popular the idea is within the fanfiction community. Some fanfic authors might be exploring this unique concept of Bella Swan being Bellathena Mikealson. You could also try joining relevant fan groups on social media platforms and ask for recommendations. There might be some hidden gems that haven't been widely discovered yet.
There could be Klaus. Since he is Rebekah's brother, he would likely be part of Bella's life in some way. He might be a protective uncle or a source of conflict if he has different ideas about how Bella should be raised. Another character could be Elijah. He might act as a mentor to Bella, teaching her about their family's history and values.