Your daughter is now a General in the King's army.
That is wonderful, you must be proud.
Intelligence = 500
Morals = 30
Faith = 400
Sensitivity = 300
Fighting Reputation = 421
Magic Reputation = 370
Social Reputation = 370
Housework Reputation = 370
Highest reputation should be Fighting and must exceed lowest reputation by 50
High intellegence is required for your daughter's success in this ending.
If your daughter's intelligence is high enough, war will hardly happen with her in charge. If it's somewhere in the middle, she will quickly learn to adapt to situations which will help her.
If your daughter's intelligence is not high enough, war will eventually break out. During one campaign she will suffer an arrow injury and be forced to retire from her position. Your daughter will then regret being so foolhardy as the scene fades out.
If moral is higher you may get the Hero ending instead.
I have managed to get this ending without the required social and housework reputation. I did max out my decorum and art though while also having talked to the king a few times while my combat stats were all over 100. I am half sure that my sensitivity hasn't 300, but was slightly below that.