They could first call for medical help. If it's a serious situation, getting a doctor or an ambulance quickly is crucial.
Some characters might offer emotional support. They can stay by her side, hold her hand, and tell her that everything will be okay to calm her down.
One possible cause could be an allergic reaction. Maybe she's exposed to a new type of pollen or a strange animal in the story. For example, if she visits a new place with rare plants, the pollen might trigger her breathing problems.
There might be a mysterious stranger. This person could be passing by when they hear Amy Fleming's screams for help. They could have some special skills or knowledge that can assist her in whatever situation she's in. Another possible character could be an authority figure like a sheriff or a teacher, depending on the setting of the fanfic, who has the power to protect her.
She could start by proofreading for grammar and spelling mistakes.
Definitely Ty Borden. He and Amy have a special relationship, so he would be deeply concerned about her illness. He could be the one running errands, getting medicine and making sure she has everything she needs. Georgie could also be a main character. She could be helping Lou with the ranch work and also spending time with Amy, telling her stories to keep her spirits up. And then there's Spartan, Amy's horse. Spartan could be acting strangely because he senses something is wrong with Amy, and his behavior could be a part of the story as well.
Her best friend could be a main character. This friend might be constantly by her side, bringing her schoolwork so she doesn't fall behind and also sharing the latest gossip from school or the stables.
Maybe there could be a neighbor who stops by. This neighbor could be an elderly person who has some old - fashioned remedies and shares stories with Amy while she's sick at home.
In a fanfic about Amy Fleming's headache, her character growth could be shown through how she deals with the pain. If she normally tries to be independent and handle everything on her own, but with the headache, she has to learn to accept help from others. This acceptance of vulnerability can be a sign of growth. For example, she might let Ty help her more with the horses even though she usually likes to do it all herself.
In the fanfic, her character could be shown in a more introspective light. Since she's confined to her bed with the flu, she has time to think about her life, her relationships, and her future. She might have flashbacks to important moments in her past and realize things about herself that she hadn't before. This could lead to some character growth once she recovers from the flu.
Amy Fleming and Ty are likely characters from a particular series or fandom. They could be characters who have a relationship, perhaps friends or more than friends. Without more context, it's hard to say exactly who they are in the grand scheme of things, but they must be important to the story if Amy is yelling for Ty.
She might rest. Just taking it easy and staying off her feet for a while can help reduce the pain. This gives her body time to heal.