Priyanka's brother's wedding

Okay so, priyanka's brother sidharth is getting married and I just realized how parineeti and her brothers shivang and sahaj who are from the dad's side of the family aren't attending the functions, however Barbie handa (mannara chopra) who's from the maternal side of the family is attending the functions with her sister...

Does anyone know why is it so? PC didn't even attend parineeti's actual wedding day