I bet that the scream came from that missing Lilliane! Manga Logic demands it is her.
And another chapter that makes me smile at their interactions. Though they could just perform a wedding ceremony to celebrate with the frontier people and to feel they are really married now that their feelings are mutual.
There are so many different ways people write dragons. Feral beasts, gold-obsessed monsters, holders of ancient wisdom, and last but certainly not least: Dog.