Not exactly.
She was already from the Marquiss family so she just talked to someone and made a requirement to reinstate her marquis title on the event she is expelled from the Valvevoa family.
So she was not granted a new title immidiatly, she always had the title but it was null because she was already from a noble family.
What do you mean that if a noble destroys a commoners property, they only have to pay a fine? They don't have to compensate the commoner? What a shitty justice system.