Yay for finally having time to do CSs! Please critique them, if I need to change anything for the storyline to flow right, do let me know!

Name: Aemiliana Secunda
Age: 14
Nationality: Roman; possibly a child of the empire’s patron goddess Roma.
Rank within nation: Second daughter of the soon-to-be emperor. 
Appearance: Aemiliana does NOT look like a Roman. She is tiny (even by Roman standards) standing only 4’8” tall and weighing a mere 75 pounds. She has very bright violet eyes, exactly the purple color that the emperor wears, and this makes people think that her mother was a goddess (as her father certainly isn’t a god.) She wears her wavy black hair in a braided coil, not usually bothering to do anything fancy with it. Aemiliana wears makeup only when she must be seen in public, and even then only grudgingly. Also, she spends most of her time indoors, and so has a very fair complexion.
Background: Aemi was born under suspicious circumstances. Her father Gaius, then a junior senator, met a woman on the streets. She seemed to be a slave, or some other lowly rank, but Gaius was enchanted. He brought the woman into his home, marrying her within the day, and seven months later Aemi was born. The woman died in childbirth (Never mind that Aemi nearly died too, being born 2 months early) and Aemi’s always been blamed for it. She’s always had poor health, what with her premature birth and a fever that came around when she was five and very nearly killed her. She desperately wants to be trained as a medic, so that she might save people from dying like her mother did, but she knows that she doesn’t have the strength to keep up with the army. So instead she informally attends the university, when she can get away from her father. Her father tends to beat her for it, telling her how stupid and weak she is, how the only thing she can do with her life is get married and vanish into the background, and how she shouldn’t go to school. To add to her problems, her older sister and her best friend are always cruel to her. Just little things: Tripping her and making her fall into the fountain, stealing one of her shoes from every set she owns, burning her homework, and so on. They really make life a living hell for her.
Strengths, weaknesses, phobias, et cetera: Aemi has a sharp mind, but doesn’t very well get along with people. She’s too shy to really say anything to anyone, and is terrified of men because of her father. She is irrationally afraid of the dark… Her weakness is taking a life; she will not even kill a spider, much less a human, and this might get her killed.
Ambition: Aemi wants to get away from her father and make her own life on her own terms. Beyond that, she feels that her father will destroy Rome, and she wants to help make sure he never gets the chance to.
Name: Aemilia Metelli
Age: 16
Nationality: Roman
Rank within nation: First daughter of the soon-to-be emperor; wife of Metellus. Friend of Nona. 
Appearance: Unlike her sister, Aemilia is very much a Roman girl. She has curly light brown hair that she always has in an elaborate updo, lovely golden eyes, and a tan complexion. She’s tall, about 5’6, and slender, about 120 pounds. She often wears golden makeup and gowns, and expensive scents to attract attention.
Background: Aemilia was the first child of Gaius Aemilius Caesar, before he became a senator, and his first wife. She was spoiled rotten, and her bratty personality reflects this. When she was fifteen she was married to Lucius Metellius Pius. She’s rather in the same boat as Nona is, with an unfaithful husband and the rest of the world knowing it.
Strengths, weaknesses, phobias, et cetera: She is cunning and has a cruel mind. Her weakness is her love of expensive jewelry and clothing, and her closed-mindedness to academics.
Ambition: To be the most powerful woman in all of Rome.
Name: Gaius Aemilius Vitellius Caesar 
Age: 42
Nationality: Roman, through-and-through.
Rank within nation: Adopted by Vitellius as heir to the Empire.
Appearance: Gaius is a big man, standing 5’11” and weighing about 200 pounds. He has stern gray eyes and close-cropped black hair. When he was younger he was quite the looker and had affairs with many young girls.
Background: (keep it brief if you want.) Gaius lived a privileged life as one of the elite in Rome. He went to school to be an orator, and to learn to fight (though he had no interest in the military.) He was from the start a very wealthy, very clever man, and he managed to connive his way out of any real military service. All he wanted was to have statues erected of him; he didn’t actually want to work for it. When he met Aemilia’s mother, he was thrilled, as he had found a pretty young woman to do his bidding. His first daughter was much like him, more interested in winning the hearts of pretty young men than in actually doing something with her life. He lavished gifts upon her. A year after Aemilia was born, Gaius met another woman on the street. She had no high-ranking family, but for whatever reason he was enchanted, and quickly married her. Seven months later Aemiliana (the little Aemilia) was born, and during childbirth her mother died. So Gaius despised her, for taking away a woman that he loved. He was rather frightened of the girl when she first opened her eyes and showed him that they were a rich purple color, not a brown or blue like they should have been. And that fright only increased as she mastered both Greek and Latin before she turned five. Gaius was intelligent enough to know that his daughter was far smarter than he was, and he didn’t want her developing her mental powers enough to be able to dethrone him. But he couldn’t stop her from going to the university informally.
When Gaius was 38, he was adopted formally by Vitellius, and as soon as Vitellius became emperor he started paying heavy bribes to all of the senators, ensuring his spot on the throne.
Strengths, weaknesses, phobias, et cetera: He loves his elder daughter and despises his younger one. His greatest strength is his cunning mind and his lack of morals. He is terrified of his younger daughter because he is not a very pious man and now he has proof of divine interference.
Ambition: Take over the Empire.