Although I agree with him on, well, everything, he has been very unfair and, honestly, quite distasteful. Much like Elisabeth in Pride and Prejudice, during Darcy's first confession. He knows fully well that she has never had any other education but that of a noble lady's, besides having been sheltered from the world while growing up and having had these 'hypocritical' values ingrained in her, yet it is as if he expects her to have the common sense and intelligence of your typical transmigrated 'vilainess'.
In any case, I hope this incident will wake up Liliana from this flowery dream of hers, because these flowers have grown thorns.