Nadia has shown herself to have a myopic view of things. She has listened to Perez and has made her mind up, as far as she is concerned the things she heard have now become the truth - She has made her mind up and will not let the actual facts get in the way of that!
Her eyes at the end when Callum and Perez were disagreeing over what was said belied her fears though, she has doubts but has to follow her myopic path as she is a 'strong woman' and it will be seen as weak if she changes her mind . . .