One idea could be a story where Yui Kodai discovers a new quirk ability within herself during a tough battle. Maybe she's able to use her size - changing quirk in a completely unexpected way that turns the tide of the fight.
One possibility could be that in the fanfiction, Charlie's journey to Heaven is a test of her redemption ideology. Maybe she goes there to prove that even sinners from Hell can have a chance at salvation. She might encounter angels who are skeptical at first but are gradually won over by her unwavering belief in the goodness of all beings.
She could develop better control over her quirk. Currently, she can change the size of objects, but she might learn to change the size of multiple objects at once or change the size of objects in a more precise manner.
American Horror Story Hotel was not based on Cecil Hotel. The show's plot and characters were created independently for the series, not drawn from the real-life events or reputation of the Cecil Hotel.
The Hotel in American Horror Story is based on the Cecil Hotel. The creators of the show were intrigued by the hotel's reputation and used it as a backdrop to create a terrifying and captivating narrative. The similarities between the fictional hotel and the real Cecil Hotel are quite notable.
The hotel in American Horror Story: Hotel isn't real. It's a product of the show's creative team. They designed it to be unique and full of horror elements to captivate the audience.