Since I don't know the full story, it could be that Miss Abbott is a patient of the doctor. Maybe she has an unusual illness and through their interactions, they develop a friendship or something more. It could also be set in a particular time period which would influence the story's context, like if it was in the Victorian era, there would be certain social norms that affect their relationship.
Rachel Abbott is an author. She has works featured in Fantastic Fiction. Her works might include various genres like thriller or mystery, and she has a certain following among readers who enjoy such types of stories.
Christmas Abbott might be a relatively unknown name to some. However, if we assume she has made a mark in a certain area, say in business. She could have a story of coming up with a unique business idea during a difficult economic time. Maybe she faced numerous rejections at first but kept persevering. She might have had to learn new skills, network with the right people, and gradually build her business from the ground up. Without more information though, this is all just speculation.
It's not based on real events. Abbott Elementary is the product of the writers' imagination, designed to bring fun and interesting school scenarios to the screen.
Abbott Elementary being at Comic Con might be part of a marketing strategy to increase its popularity and reach a wider audience. Plus, it gives the cast and crew a chance to connect directly with the fans and get feedback.
Lynn Messina might be an author who has contributed works to the Fantastic Fiction genre. However, without further research, it's difficult to say exactly what her role or significance is. It could also be a character name, but again, more details are needed.