It could be a fellow wizard who she has been in a long - term relationship with. Maybe someone from her group of friends or an ally she has made in her adventures in the wizarding world.
One common theme is love against the backdrop of war. Given the time period in the Harry Potter universe, they often face the threat of Voldemort's rise. Their relationship is then tested by the chaos and danger of the wizarding war.
Love is a common theme. Their relationship, whether it's a budding romance or a deep friendship, is often explored. For instance, many fanfictions depict how they might have fallen for each other gradually.
One idea could be exploring how Marlene McKinnon's pregnancy affects her relationships within the wizarding community. Maybe she has to deal with the reactions of her friends and family, and how they support or sometimes misunderstand her during this time.
Some fanfictions explore a scenario where Marlene survives the war and she and Sirius get a chance to rekindle their relationship. It delves into how they deal with the trauma of the war and their past feelings for each other. They might have to face the judgment of the wizarding society which has changed after the war. This plotline can be very emotional and complex as it involves a lot of character development and exploration of post - war wizarding world.
Fanfiction.net might also be a good place to look for Sirius Black and Marlene McKinnon fanfiction. However, the interface and the categorization system might be a bit different from AO3. You may need to dig around a bit more in the search results to find exactly what you're looking for.
One great Marlene McKinnon and Sirius Black fanfiction is 'The Lost Memories'. It beautifully weaves their relationship within the magical world of Hogwarts. The story focuses on their shared adventures and how their bond develops over time. It has a great plot with lots of twists and turns that keep you hooked.
There's also 'Sirius Black and Marlene McKinnon: An Untold Bond'. This fanfic focuses on their friendship and how it might have developed into something more. It's well - written, with detailed descriptions of the characters and their emotions. For example, it really captures Marlene's feisty personality and Sirius's loyalty.
One common theme is her characters from Saturday Night Live. Fans often write fanfics expanding on the stories or personalities of the characters she portrays. For example, if she played a really funny character, the fanfic might continue the character's adventures.
I'm sorry, but without more specific information about Marlene and Rebecca, I can't tell their full story. There could be many Marlenes and Rebeccas in the world with different stories.