The nobles avoid using direct language between each other and often indirectly point out what they want.
Ferdinand learn this lesson rather quickly and just use a sealed room whenever he needs to be BLUNT towards her.
For example
"Hey, that dish look delicious" actually implies "give me some of those" since a 'superior' is showing interest in something, the 'underling' should offer it up.
Myne, not knowing this, just replies "yes they are" and keep on eating.