For that Yash and aarti will have to be back in family...show the agony of bua to all family and convince them for her marriage...bua will then be aartis biggest fan...Bua's marraige can be shown. I am not joking. Seriously this track can be shown n handled with great sensitivity. AarYa's marraige was for their children but its not tha case for bua. Age is another factor for her.
It can handle social issue of PV along with elderly marraige.