I think Khushi will eventually try & harm Roli because Khushi knows she is not pregnant & Roli has evidence against Khushi. Sid will take a bullet for Roli and once he is in the hospital fighting for his life Roli will forget about her didi jaap and focus on Sid. In fact Roli may initially blame Simar too for Sid getting shot because Simar is so wrapped up in her baby that she is ok with harboring a criminal in the family