Most likely she won't die at all during the war.People on this forum are too quick to kill someone off.And to the original poster, exactly why do you think she wouldn't give Naruto the titled.Along with Jiraiya she has believe in Naruto the most throughout the series, so much so that she gave him her grandfather's necklace, which she had only given to two people who both wanted to be hokage, her lover Dan and her little brother Nawaki.Not to mention she didn't tried to stop Naruto and Bee when they were trying to get by the Raikage.Base off those facts alone, I see her giving the titled of Hokage to Naruto when she feels he's ready.