I'm not sure if there is a proper or appropriate story. Fanfic often involves fictional and sometimes inappropriate or unethical content. If it's about sexual fanfic, it's not something that should be promoted as it violates moral and ethical boundaries.
It is not appropriate at all. The Incredibles franchise is about heroism, family values, and adventure. Fanfiction should stay within the boundaries of the general theme of the original work. Sexual fanfiction about these characters not only distorts the essence of the story but may also make many fans uncomfortable.
Writing such fanfic involving sexual content is inappropriate and unethical. Fanfiction should be based on positive, respectful and non - explicit themes to be acceptable in a general community.
A great alternative would be to write a story about Mrs O'leary's role in her community. Maybe she helps to organize local events, or she is part of a group that is trying to save an old building. This way, it focuses on positive aspects of her character and her place in society.
I'm not sure who exactly Mrs Trimble is in 'Bedtime Stories' without more context. It could be a character created specifically for a particular collection of bedtime stories, perhaps a storyteller or a character within the stories themselves.
She might be a local storyteller in a community. Mrs Elaine could be known for her engaging bedtime stories that she shares with the neighborhood kids. Maybe she has a special place, like a cozy corner in the local library or a bench in the park, where she gathers the children to tell her stories.