Senator Visalyaputra's daughter running away from the biggest wedding of the century, did not catch wind in New Jersey. Prisana's father being her father, managed to hush all of those well established families. Must have paid each lucky person present a hefty sum to keep their mouths sealed.
Faking their private ceremony was not difficult. Her father and his circle of friends could use any means necessary to manipulate the media. Manipulate the entirety of New Jersey's population if the need arose to do so.
The only hard part came when Prisana had to play her role as Giovanni's loving wife. She was not a loving wife. He was not a dear husband. During the day, he would leave for work or whatever business until night came. She would hole herself into her room and indulge in the online college classes she enrolled herself into.