Looks like its another dhadkan movie in making.... Its not going to be a smooth sailing for Naku either after marriage. Her evil SILs and mother in law (yet to be shown as gang leader of evil sisters) will torture her before and after her beautiful face is revealed, when Dutta will be away from home, and in front of him will all be goody goody.
When Naku will find out the true face of her SILs, she will try to convince Dutta who will probably not believe her in the begining, but will still have deep trust for Naku somewhere in his heart.
Then something will happen where the SILs will try to blame Naku in front of Dutta, but Dutta will oppose his sisters and support Naku(just like Akshay Kumar did in dhadkan - "Mein Har cheez par vishwas kar sakta hoon par yeh nahi ki iske charitar(character) mein daag hai). I think the blame will be for stealing money or so as she comes from poor background.
After that Dutta and Naku's love and understanding will start developing and they will become an inseparable couple:-)