Princess Ellen took a deep breath, although prince Sebastian saw her hesitation, he pretended not to notice anything. Since things have gotten to this point he wanted to find any opportunity to be close to his sunshine.
He knew deep down that even if she was acting brave, she will be unconsciously scared of him. So he wanted to start making her feel comfortable around him again. So he pulls her out of the room and leads her to his own chamber.
Princess Ellen pinned her lips and follow him. She was afraid that he will misunderstand her if she rejected going with him. Who knew if he will get angry and suck her life out of her. So she followed obediently.
She did not even realize that her thought process towards the prince has changed because of what she witnessed that morning. Nobody will want to die the way that man died so it was not her fault for thinking this way and acting with self-awareness.