Seeking ideas

How is Khushi going to get her hands on the will papers? I've assumed that Shyam is the kidnapper and he's just waiting for the will documents to be verified before he offs Arnav. So the way for Khushi to buy time before she figures out where Arnav is being held is to get her hands on those papers, right? So how does she go about it? or does she just try and find arnav?