1) seher has been raised by razia and therefore came to take revenge from sanam and Dilshad but than in the end work with sanam to bring tanveer downfall
2) razia has replaced seher with sanam to get the half property and kidnaps sanam but than ahil and rehaan finds out about it and than all three sahil and rehaan play a game to turn the tables
3) seher was raised by someone else and is a theif and came in haya wedding as a grandma to steal something and finds out about her twin sister and like zoya, seher is smart , funny and a detective type of girl and starts investigating.
Personally I like the last one which one would you guyz prefer and would love to know more ideas. So please if you guys have any other ideas, do share.
P. S. Want sanam and seher to bring tanveer downfall and what would the sisters combined names be??