Manju

I didn't watch Pavitra Rishta from the beginning, I started watching like a week or so into it but from what I've seen Manju has never been treated poorly by her in laws so why is she out to make their lives miserable? Granted I don't like Sulochana at the moment but she's been a good mother in law to Manju, even when Vinod left Manju it was Sulochana who brought her back home and has continued to treat her well. Her in laws weren't even upset with her after learning what she did with the jewellery, they continued to show her love and treated her well so why is she doing this? Why is she determined to hurt them, and breaking Manav and Archana apart? I really hope she gets caught and doesn't get off easy like she has in the past, Manju, Ajit and their mother need to pay for what they've done.