Do you think this idea is nice enough?

I'm writing a novel right now, so I want to know if this idea are nice enough.

So the story's about a sorcerer. In this story, a sorcerer is normal human beings whose life purpose weren't fulfilled. Someone's life has a goal though they don't realize it, but sometimes someone's life goal crosses other's so the one whose life goal are not fulfilled will be reborn with the power of a sorcerer.

In this past life, she was a princess in the anglo saxon time. Her father hated her mother very much since their marriage are an arranged marriage. He tries to avoid his castle as much as he could, travel his kingdom. He even insert a really small amount of poison into her food to make her ill and die slowly without any suspicion.

This princess's life are all about her mother and books, especially mithology books which were restricted during the anglo saxon times.

She has a hidden library in her room where she and her mother would read and spend the night there alone.

One day, her mother died. At the day of her mother's funeral, her father bring a woman into their castle who has an affair with her father all this time. At first, they avoid each other but don't fight at all. Untill this woman found that she's making her father felt guilty for her mother's death. This woman were jealous, so she search for a way to swipe her away. This woman find her secret library and burn alll her books.

Angry, she smashed the woman's head with a wooden chair. She then tortured by her father for her doings and punished to spent her days at the underground jail.

Days after that, she was released and pulled into a ball without any explanations. She danced with a prince, who's handsome but the way he looks at her creeps the princess out. She then told that she'll get married with him. She was afraid, thinking that there's nothing good comes from marriage. She run to her aunt's house secretly and ask for her help. They then arrange a plan.

Every week, she visit her aunt to receive some martial art and sword lessons secretly. One day, his father and the woman were going to get married since the woman is already pregnant. Her aunt decide that this is the perfect time. At the party night, she run to her aunt's place, become a squire, then follows her aunt's husband who actually is a knight to a battle field.

She met an annoying squire there beside herself. Who then found out her true identity. They fought a lot. The knight one day died because of the attack of the Turki soldier.

They were invested as knights to guid their soldiers to fight Turki. They have to learn to work together to avoid the group split into two. But slowly they falll in love. One day, the princess died in another war, leaving her lover.

The story revolves around the princess's new life as a sorcerrer, giving up searching for her lover. It's just impossible to find him after hundreds of years. She become a messenger of this world and the magic world, linking the black sorcerer (The one who live in our world) with sorcerer (The one who live at the magic world). Unexpectedly, her client is actually her lover's black sorcerers group! She thinks that she must be imagining things, and then refuse to take this job. But then the magic world's government pulled her to take this job. Unwillingly, she then said yes.

It was awkward, but she then found out that they're still in love with each other.

One day, the black sorcerers decide to attack the magic world to demand their own government. Her lover, as the general of the army, forced to fight the sorcerer, at other word, his lover since she's also a general.

Than at the end, she sacrifice herself to do a magic which will seal the magic world portal from the black sorcerer forever with sadness and the feeling of betrayal.

He felt bad for his lover, chasing the girl wanting to explain the situation. But he was late, the spell has been cast and then she died regretfully.

Sorry for the terrible grammar. My first language is not English.