Nix might also sense the approach of another demon, if he didn't already sense the approach of Fenrir. The ghost like white wolf would be fast approaching to where Nix was and once it had found him would jump down besides him and sit down as it looked up at him. It would just yawn and lay down not caring about the girl or anything else as Yomi had just ordered him to find Nix and that was all. With that though, Nix, would know that Yomi was looking for him and would most likely becoming towards him now that Fenrir was just sitting there. Yomi was indeed head towards him now that Fenrir had found him and knew where he was, but it would take a bit before she would actually get to him.