There wasn't much preparations needed for Moon Jiwoo to do. Since she would be caught by Sookyung if she went through the normal way, she was suggested another path by Minnie.
Jiwoo wanted to inform Sookyung before leaving, but Minnie told her to go against that, saying that the matter would get complicated.
Although Jiwoo did not completely understand what Minnie was trying to imply, she followed her words.
It wasn't as if Jiwoo was going into hiding for forever, and she already left Sookyung a note in her room.
He would probably be understanding her after reading that, and even if he tries to find her, by the time he will finish reading that note, Jiwoo will already be at the surface.
Walking through the snowy fields, she wondered what her destination was. She didn't know much about it and followed Minnie's orders.