Ah, so her mom was the reason she knew a little about the goblin world. And at some point their mom ended up being absent from their life. I wonder what happened. It'd be interesting if she were a goblin. And the reason Ji-ahn was able to disperse the goblin's grab was because she's half-goblin??
Also, that blue hair might be the 2nd prince. He was talking to the other goblin as if he was the one in charge and he was calling the shots. OR they are both subordinates, but he's of higher rank. But I think he's the prince cuz he said "[Ga Hong] must really be scared of you", so the prince is one of those two. But since his clothing looks more dignified than the other goblin, it's prob him. So he must have been just joking and bs'ing when he said that. (Like if you're with some friends and and your ex walks by and turns her nose up at yall, and you say to one of them, "wow, she must really hate you").