What are you doing really???just nothing..you have no problem with madhu's revenge at first and no problem with madhu's marraige now..u felt that may be madhu has changed her mind and wants to marry him and you were happy by seeing her happy..U have also seen ur mother's attempts to break ur sister's marraige with the help of sultan then
why cant u go to ur sister and tell her whats happening????what her mother n her FRIEND are upto..why cant u say her that they want to kidnap u and break ur marraige..ur the one who promised madhu that i will always be for u stand up for u and protect u..keep up ur promise now she is in threat from her family..instead of telling to ur blind folded mother go and warn ur sister and make urself useful