AGAIN dont read if you dont want to know what will happen, hope I remember everything correctly:
She gets lots of money and invests it, which she is using to change her position from a "daughter of a prostitute" to a wealthy and smart investor who has high influence in the city.
The maid of her sister will be the first to pay for her sins by using the maid they sent to Aria.
The father will have a bad event happening (Wont tell too much) and it will be used to damage her sister a bit (deserved you will see why).
Then a certain event against the royal family will be used to take down the arrogant noble families which involves taking down her brother and her sister.
Arias real father will be revealed. Her mom will remarry the man she once loved (father of Aria) and take all the money of the a*hole duke with her.
But Aria will not let her siblings off so easily so she saves them just to destroy them in a even worse way.

in between all of this is the marriage of Aria and the prince and the explanation why Aria has the power to turn back time. They live ever happy after.
I have to say that the stories after the end of the main story is not much worth reading but its okayish ^^