Unless we know the truth about why Kakashi killed Rin then it will make more sense.
Uchiha Madara Gennin of The Leaf
Posts : 130
Subject: Re: Naruto 605 Mon Oct 22, 2012 5:04 pm
Let me make a guess:The reason may be because Rin later turned out to be a traitor, as the enemy members were concerned about her body and tried to stop obito from taking it.