I dont think Sadhana is obsessed with Ragini's happiness. Its something different...she considers herself a curse or bad omen for Ragini. This is all because of Kaushi. She has not only made Ragini so emotionally weak and dependent by constantly reminding her that she is dark, ugly and inferior. Kaushi played a similar mind game with Sadhana by constantly reminding Sadhana through her actions that she is a bad omen for Ragini.
When Alekh was reading Mamaji's book on Sadhana, he felt so bad for her that she is an orphan. At that time she told Alekh.."Jiji ne sambhal liya tha". If Sadhana can do so much for Kaushi then she can give her life for Ragini. Alekh has disowned her and she doesn't even know Alekh's true feelings. Everyone has made her feel that she is the one who took away Ragini's happiness. So Sadhana has no other goal in life now except to see her sister happy.
Edited by --Anu-- - 15 years ago