The moment that Charles bothered Victoria about her knight, Ashiel's grip on his sword was enough to see that the veins in his hands were showing. Charles who could t avert his gaze from the glare of the former knew how he was reacting.
Not because he was aware of the situation and he knew it but because he might be suspicious about something. That led him to think that Ashiel can do something about the impending destruction of the empire - by the neighboring enemy's land
Victoria, upon seeing them act like that, couldn't even control her eyebrows to crease fully. Well, she was aware that since Charles had confessed his feelings to her, he might even be jealous of Ashiel knowing that they were close but then, she also realized that Charles could be bad because of his dark side
