The AU Where Shikako Becomes Otokage: A Scene from the Fourth War
The bijuu bomb is nearing headquarters, where Shikako's stationed as a sensor with Inoichi and Shikaku and that giant globe that enhances sensory abilities or whatever it does.
(The Kages mostly all started out at headquarters, anyway. So it makes some sense that Shikako would be there, too.)
The bomb heads for them, Shikaku tells her to run. She looks at him. He calls her Otokage, and says she has a duty to her people, and tells her to go- (he needs her to live, he wants to tell her he loves her and he's proud of her and she'll always be his little girl but then she won't run, so tells Shikamaru to tell her, and he calls her Otokage) and she leaves.
She leaves to go straight up and seal the bijuu bomb before it hits headquarters. It's a slapdash job, especially with all that terrible chakra, and she loses her hand up to the wrist.
(However. She now has a bijuu bomb sealed away. She an definitely think of a giant target she wants to use it on.)
[Shikaku and Shikamaru, and Inoichi and Ino had a very touching goodbye scene. And then they didn't die, which an amazing relief and also a little awkward. And, now, via Inoichi, Shikaku is trying to tell his now one handed daughter not to go near the battlefield full of demonic chakra that, as a sensor, she's demonstratively too vulnerable to. (She had tested it- close contract with that much tailed beast chakra all but causes her to pass out.) She won't be able to function at her full capabilities, and in a fight like this, that's a death sentence.
Shikako points out that 1) it would be very rude to fail to return the juubi's gift 2) this way she's in the flight path of any more bijuu bombs haded toward HQ, and she's thinking of starting a collection 3) she's just going to shove the damn bomb down the monster's throat and then get out of the way, it's not like she's staying to have a tea party 4) think of this as the culmination of four years of teenage rebellion he'd previously gotten a pass on and 5)she didn't get to be leader of a Hidden Village at age 12 (the age she was when Sasuke defected and Itachi killed Orochimaru) by being a wimp.
She is the Otokage, and it appears that she needs to show the alliance what that means, because apparently her family thinks that means she'll just up and leave when things get tough, and damnit it, she get's that he's upset, but she never left them.
(She was taken, neither of them say. She's already said more than she meant to.)
Then you had better come back alive, Shikaku sends to her instead, and starts detailing the best way to implement her plan- and to coordinate with the other forces- as she sprints toward the battlefield.