Well, there are two instances of the kyber crystals having an effect on people throughout the film’s plot.
Being able to read the imprint of the Force around people, as well as the presence of kyber crystals, there’s a precedent that kyber crystals have indeed had an effect on a person’s mind.
The Ersos and Orson Krennic are having an evening of discussion and drinks, and Jyn remembers this moment from her childhood.
So how does this tie into Rogue One: A Star Wars Story?