You know I've always thought of her as the dusri aurat and perhaps that's why he killed her off, before others could find out about their relationship.
But in the picture she was wearing sindoor as well, so I'm guessing maybe Thakur tricked her into the relationship and as Sidra said, for money and everything?
I'm thinking the red packet probably contains her bangles since they look roundish, but other than that I'm really not sure what's going on with this hatyakaand...