since SB met her so called son 'karan', she has shown drastic change in her behaviour. earlier when jaiswal was after viren's life, SB showed lot of concern for viren and even hired a bodyguard. but now she reacted as if viren is a stranger. except jeevika, others were behaving like its a normal thing.
SB's reaction was actually shocking. she is really selfish. how could she forget years long love and affection with viren.