Either those RAAZ papers in English inside the locker got exchanged long back, even before R opened that locker secretly & took those out. 😎
OR
From the time R took to reach kitchen along with those papers to return keys & then go back to room to hide those papers, those got tampered on her way in corridors,🤪 which hasn't been shown to viewers.
Real papers may be dealing with Mohan's property or business, as they seem like legal docs.
But various ways to declare a marriage void, were used as papers for shoot. 😆
Feel its just a time pass trap to make R steal keys & take them out. Previous night D already got soap imprint of that locker key under her possession, so she will get a spare key with her now.😎 She can also steal money/jewels from locker safe, to put blame on R easily.
Otherwise how will Ghost not know about RAAZ dealing with her own death, when she is idling for so long in same house & also heard D K fearfully talk about their RAAZ being out?😕