The Vicious Woman and the White Moonlight are both me

Jiang Xiaoyu transmigrated into a novel. 

Good news:
She’s now a princess—noble, wealthy, pampered, and equipped with a system!
Jiang Xiaoyu thought, well, I can’t go back anyway… might as well enjoy this identity! 

Bad news:
She’s the story’s ultimate villainess—
exploiting her status to bully men and women, and tormenting the male lead to win his favor,

Drugging the hero and throwing him into a brothel (Nanfeng Pavilion),
starving him before tossing him into a hunting ground,
even ordering her guards to break his legs—
she did it all.

Naturally, the handsome, tragic male lead later meets the kind, virtuous heroine.
And as the second male lead falls for that same heroine,
the princess’s jealousy twists into madness.
In the end, her sins catch up with her, and she dies in a raging fire.

After reviewing the original princess’s crimes, Jiang Xiaoyu declared indignantly,

“This is outrageous! But wait… none of this has happened yet.
So, I’m here to change the story, right?”

[No], the system replied coldly.
[Everything you just listed is your mission.
Complete each event successfully to earn points.
Points can be exchanged for anything—treasures, medicine, weapons…
Once your character dies, you may use your points to live on in this world with your chosen identity.]

Unable to refuse, Jiang Xiaoyu had no choice but to play the vicious princess by day—
and, guilt-ridden, secretly rescue the male lead by night.
Gradually, she earned his trust, even taking him on as her disciple.
What she didn’t know was that, in his heart, she had already become his “white moonlight.”

Every day, Jiang Xiaoyu prayed for the story to end soon,
so she could fake her death, cash in her points, and finally live freely.
But she didn’t expect that all her hard-earned points—
she’d spent them all helping him.

When she finally pulled off her fake death and escaped, she looked at her empty wallet and nearly cried.

“Not a single coin left! How am I supposed to live now?
Serves me right for spending on a man— I thought it was an investment, and now I’m completely bankrupt!”

Just then, the man who was now the emperor appeared in this secluded courtyard.
His expression was cold as he pushed open the door, having overheard her words.

“After everything you’ve done, if you wanted a reward,
you could’ve just asked me directly.
So, tell me—what should I call you?
Imperial Sister… or Master?”

Jiang Xiaoyu stood frozen, clutching two copper coins, trembling.
I’m doomed. When did he find out who I really am?!

Notes:

1. After transmigration, the heroine is three years older than the male lead.
2. She’s the Emperor’s adopted sister; the male lead is an unloved prince—no bl00d relation.
3. The original princess was truly vicious; the heroine only pretends to act cruel to fulfill her “villain” role, always minimizing the harm where she can. (Her actions don’t reflect the author’s values.)