Sharon heard her favorite novelist speak out against a political candidate that Sharon has supported for years.
Situation
Sharon has a favorite novelist (X) and a political candidate she's supported for years (Y).
She heard that X spoke out against (criticized) Y. It made her think less of X, but it didn't change how she thought about the Y.
Evaluate / Goal
Because the paragraph is labeled as a situation, as opposed to an argument / reasoning, we don't need to look for a premise / conclusion breakdown.
We just need a principle that matches this situation — one person you like (the novelist) criticizes someone else you like (the politician). you think less of the critic, but your opinion of the criticized stays the same.