In reality , noraNora wanted to infuse fear in yukine'sYukine's mind , as she was trying to remove all yato'sYato's connections which connect Yato to goodwill.
Basically Basically, she wanted to break yato'sYato's connection with yukine Yukine, him being yato'sYato's (yabko'sYaboku's) exemplar .She She was continuously trying to make yukineYukine leave yatoYato (in fear) , so that she can awoke the previous yato Yato, who'swhose intention was to kill.
As that would have left yatoYato in enraged and mentally weak state (easy to control) that the death of yukineYukine (which could have resulted in fall of yatoYato).