lvl 120 KoC quest glitched @ black Witch??

Yes.
Go away Enter button.
We don't like you.
You fail to help the lazy people who don't take the time to figure out the Maple Storyline.

I wish~there was a way to instantly display all the text in the box without the mouse, NPC chat used to do this but got changed when NPCs were single-clickable. I used to actually read some NPC text of ordinary quests like that, but now, moving my hand to the mouse is too much effort =[