I think thrz a reason why rs made ragz call sanskar "bhaiyaa"...in North India in common parlance u do call a stranger "bhaisaab" or "behenji"...but when in a family set up u call ur jeth "bhaiyaa" then it remains as it is...n ragz might hv to call swara "bhabhi" as well cuz she is married to her jeth (although a fake marriage) n there4 she is ragz "jethani"..."sangini" is out of question...
somehow I feel everything is pointing towards "swasan"...I do remember a scenewhr ragz used to go to maheshwari house to be wwith sanskar b4 she turned evil...n when swara n ragz were going home sanskar was looking from up n he said to himself something like "I wl never let lucky get his love, swara"...n then swara turns bk n asks ragz ki kya tumne mujhse kuch kaha n then looks up but by that time sanskar steps bk...imo tht was the first indication towards swasan...
Awesome points and post.đł