u know how everyone's saying that roshni is in fact a positive character and not negative character she currently potrays...i think her reason for coming back into Jai;s life is to get jai and bani together ..i know it sounds wierd but think about it ..first of rakshanda khan has already said that her charachter is going to a positive one. secondly when roshni got the news that Bani was pregnant she went to jai and said that she had come here for a reason and she will now tell him what the reason was but of course b4 she cud , every1 found out it was anu dats preg...and have u guys noticed how she, in her wierd nasty way, is actually helping Jai realise of his true feelings for Bani ..
well dats just my theory...wat do u guys think?