Guess the shooter might be Balraj or his men & Target Madhubalaaa...
B'coz he was in Mumbai & in jail during all the accident fuss & also there was media coverage in Madhu's house & Padmini was at home in that scene...
Maybe Balraj or his men or that lady choudarain must have watched the video coverage in which Padmini was there & informed Balraj he must have gussed Madhu is his daughter...
A Possibility.. !!!!!