The sense that Zyla just released made Isaiah and Erisla to have an instant awareness that this human is a radical person. Her instincts displays that, and if their Prince is going to marry her in the nearest future, they have to be prepared to obey her in all areas of her life.
She is going to display the attitude of a no-nonsense human being and that is what they have all been waiting for but never got in time. Zyla still hesitantly accepted Zadok's request to be his bride at the feast, meaning she thought before she responded which is a very good sight to see. It will not be difficult to defend herself when the nasty and possessive brothers of Zadok come for the feast and try to do their bad acts with her.
It's not an assurance that they will want to do it with her, but they will surely do something to her because her beauty is beyond words and therefore she can't be ignored.
"If I may ask, Zyla..."