Awww, last panel is so wholesome 
lmao i love the duke tho, letting the king know he can order him but whether he follows the order or not... lmaoooo he knows he's top dog. ugh that queen tho, normally i'd think they meant to marry her into the royal family, but remembering how that crazy queen was like "call me mother" and seeing the king ask if the duke would give up his daughter, it's entirely possible they actually meant to take her in as a princess without her marrying in;;; it probably does mean marrying in tho bc what they want is that castiello connection, right?