Red Queen

Mela, born from a general family has been taken to the battle field at the age of 13, but she was a selfish, arrogant, and greedy lady causing issues for her general father, mother, and elder brothers. But blood was thicker than water so they put up with her attitude plus they were never there her whole life, always leaving her to her uncle and his family causing her to have a close bond to them instead of her own family, they thought bringing her with them to the battlefield would get them closer to each other.
However, during an intense battle with the enemy, Mela actually got shot with an arrow while hiding like a coward. Nobody knew, but when she opened her eyes she wasn't the same coward. She was a modern female bodyguard who got shot protecting her employer.
When she wakes up during the battlefield, the victory changes course.