Archie might also step in to help. He's always been a good friend to Betty. He could use his physical strength to help her get around if she's too weak. And he could also organize the town to raise funds for Betty's medical treatment if it's something very expensive.
Her best friend Veronica would probably be one of the first to help. Veronica is wealthy and could use her resources to get the best doctors for Betty.
Well, perhaps she gets sick because of some sort of environmental factor in Riverdale. It could be related to the polluted river or some toxic gas leak. And this sickness then affects her relationships with Jughead, Archie and Veronica. She might become more withdrawn and they would have to figure out how to help her.
Seth could be the one to help her. As her brother, he would be very concerned and might use his own knowledge of Fablehaven and its secrets to try and find a cure. He could also enlist the help of some of the friendly magical creatures they've befriended, like the fairies or the satyrs.
Obviously, her best friends Sam and Freddie would visit her. They are always there for each other. Maybe Gibby would also come over with his unique brand of humor to try and cheer Carly up.
I'm not sure specifically as there could be many different interpretations. It might be a fan - written story about Betty from Riverdale being sick in the first part of the story. Maybe it focuses on how her sickness affects her relationships in Riverdale, like with Jughead or her friends.
Sango could also take care of Kagome. As a strong and kind - hearted woman, she would know how to nurse Kagome back to health. She might use her knowledge of herbs and remedies to make Kagome feel better. Plus, she would offer emotional support to Kagome during her illness.
Well, in such a fanfic, Betty might struggle to take care of herself or have to rely on neighbors or friends for help.
You could try searching on popular fanfic websites like Archive of Our Own (AO3) or FanFiction.net. These platforms often have a large collection of Riverdale fanfics.
His teammates, Sasuke and Sakura, would surely be involved. Sasuke, although he may not show it as much, still cares about Naruto. He would keep an eye on Naruto's condition, and if there was any sign of danger, he would be ready to protect him. Sakura would be more hands - on with the medical care, checking his temperature, giving him medicine, and making sure he rests properly.
Alfred would probably be the first one to take care of him. He's always there for Batman.
Another possibility is that one of the other characters in PLL has a hidden motive. For instance, someone who is jealous of Allison's popularity or someone who she had an argument with in the past. They might have found a way to make her sick without being suspected at first.