Since we don't have a lot of information just from 'Cameron Post True Story', Cameron Post is likely the main character of this true story. She could be an ordinary person who has had some extraordinary experiences that are worth telling.
A rich and spoiled trainer who has access to all the latest Pokemon gear and rare Pokemon could be a rival. This person might look down on Cameron at first but later realizes Cameron's true strength. There could be a lot of tension and competition between them.
It depends on the context and development of the story. Sometimes love alone can overcome many challenges, but in other cases, external factors might play a role.
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.
Often, Allison adult novels tend to have more complex characters. For example, in many of these novels, characters are dealing with real - life problems like relationship issues, career struggles, or self - discovery. They are not just one - dimensional but have a depth to them.
Well, without more information, the story of Allison and Emily could be anything. Maybe they are sisters - Allison being the older and more protective one, and Emily the younger and more adventurous. They might have grown up in a small town and had to face challenges together like dealing with mean neighbors or trying to save their family's old house from being demolished.