"Just sit still over there, I can do something with it" seeing that this elven beauty doesn't seem to believe he can free her from the mana suppressing shackles, Diluc just continues what he is doing, feeling a significant progress on whatever it is that he is doing as he forced the shackles into compromising its structural integrity, the strength of his grip alone more than enough to deform the shackles to the point that the elven beauty can just slip her hands through them.
After discovering this fact, the elven beauty couldn't help but feel astonished while looking at this young man, trying to think of whatever it is that made him able to do it, second guessing through all sorts of possibilities in her mind.