What exactly did she think of that ice swordsman before that fight? Does she not know how MC's disappearance would rattle her that much? What's she trying to accomplish holding off the reunion between them?
The answer to all of those questions is simple, she’s an a*shole meddler that like to be in everyone’s business. She probably thinks everyone is her personal “toy” to play with……in my opinion at least. Characters like her infuriate me so much cause they be annoying.
The cynical in me: She's the author's agent, she's there to pad the story needlessly.
But the rationale in me: We don't know enough about the characters to say, we can see that the guildmaster knows more than us about the hero-girl.
Like, imagine if she stopped going on high-danger quests, because of the MC?
But either way, the real problem is that the author shows us decisions we cannot understand, so we can only be angry with them. Only now, did the author imply why the guildmaster is intervening: Hero-girl is not herself when it comes to the MC, and it's a problem.
That should've been revealed way earlier.
plenty enough talk on what her intentions might be but, from what I'm seeing, the actual effect so far is that keeping the 3 parties separate makes each of them reconcile with their past and current situation.
Dion has time to adjust to his new abilities and station before meeting back up with Yuki. If they reunited right away, he probably would just return to their old relationship where he's nothing more than a support, in the sense that he's just a follower. This isn't White Knight Chronicles, he needs to view himself as the mc of his story, not the viewpoint character of hers.
Yuki still needs more time to reflect on herself and the party. From what the GM is saying, it sounds like Yuki viewed everyone but Dion the way everyone else viewed Dion. This means a whole lot of things, many of which are huge problems. Though taking it to the point of attempted murder is entirely on them, she might need to confront her indirect role in Dion's treatment and either change the way she treats others or acknowledge the real reason she treats Dion differently, both for herself and others to see.
For the party, it's fucking obvious. In a vacuum, it might seem better just to get rid of them for trying to kill their own, and you might want to do that as a GM to protect your human resources, but if them getting eviscerated, torn to shreds, and savagely mobbed by a hoard of nightmare shadow monsters to realize their failings and learn their place, then you get to keep them as moderately useful resources. That's clearly the better option. Basically, either as a leader or author, a beating that straightens out a crook is worth more than throwing the crooked away.
Though, all these points are sans any revelations about investigations that may come in the coming chapters.