Jai-Roshni-Bani connection

My guess for the connection is that Jai-Roshni were close college friends but Roshni just wants money & since Jai has just started business she dumps him. Roshni starts an affair with a rich man who is a widower and is handicapped. This man has a mansion on Park road. The rich man has a daughter and a governess. Jai meets him regd business deal and old flames are lightened up with Roshni.They both plan to accidently trip off the handicapped rich man off the stairs or a floor or an accident (like Karz or Dhund). Roshni gets large portion of the money and becoz of police investigation sneaks out of the country. Later Jai regrets this. The governess witnesses this and runs away with the little girl. She has only seen Jai's involvement and hence demands support from him in lieu of keeping quiet. Jai promises to help them. The governess is Kiran & the girl Bani. She marries Nishikant and lives in Mt Abu.

Years later Roshni wants Jai back in her life.