The Question and Answer section for The Testing is a great resource to ask questions, find answers, and discuss the novel.
I think that Cia wouls act much as she did in the novel. Her personality was well rounded and because of her intelligence, aptitude for reading others, and her obvious maturity..... I don't think she be much different than the character we meet in...
Why? I'm sorry, you'll need to add quite a few details to your question.
There are a number of themes you can consider. Check out the GradeSaver link below and find one that you think fits best: