My first thought was a main story about Carla, Amelia's ex Carla and how there are people after her and the girl she was with the last time we read about her. Maybe a story here first exploring Carla's relationship with her new girlfriend (maybe this new girl is her true mate and a new type of supernatural in the universe?) and how they and the brother (I think it was the other girl's brother iirc?) are hiding out in a chapters in Shorts? Then maybe Carla leaves for something and returns to find her girlfriend missing and the brother half dead which forces her to ask others like Lara, Kiki, etc for help which is the next big story?
This is my idea from when you asked me in the shorts chapters, cause I tried posting a reply there twice and it doesn't show up.