Maybe they were having a friendly tickling fight among themselves while waiting at the hospital. It could be a way to pass the time and ease the tension of being in a hospital environment.
I'm not sure specifically what the 'hospital diaper girl story' is without more context. It could be a story about a girl in a hospital who needs to wear a diaper perhaps due to an illness or injury that restricts her ability to use the toilet normally.
" There's Something Wrong with This Healing Game " described a young girl lying on a hospital bed, asking why she couldn't be discharged, and learning that she was in a mental hospital.
Yes, there might be some. However, I'm not immediately aware of a super - popular one that is exactly about a girl in hospital with a heart problem. But there are many books that deal with illness and hospital stays in general that could be relevant.
Since we don't have the full story, it's hard to say who the main character is exactly. But it's likely the girl who is associated with the diaper in the hospital context.
The theme of acceptance is also prevalent. As the girl faces her mortality, she has to come to terms with it. In many fanfictions, this journey of acceptance is explored deeply. Also, the theme of love is there. It could be the love of family, the love of a new friend made in the hospital, or even a romantic love that blossoms in the most unexpected of circumstances. For example, in some stories, a young doctor might fall in love with the dying girl and tries to make her last days special. This love often adds an extra layer of emotion to the story.
The main character is the girl. In this type of story, she is likely to be the one through whose eyes we experience the events in the ruined hospital. She will be the one facing the challenges, whether it's dealing with the spooky atmosphere, any strange entities she might encounter, or trying to find a way out of the dilapidated place.
They might be strangers at first. For example, the girl could have been in an accident and the guy, who was just visiting someone else in the hospital, helped her out and then they started to interact more. He might have given her some courage during a difficult time in the hospital.
One popular 'dying girl hospital fanfiction' might be 'The Last Days in the Hospital'. It focuses on the emotional journey of a dying girl, her relationships with the hospital staff and other patients, and how she copes with her impending death.