According to the police the woman identified as Anuradha Prakash Kawalkar (32), along with her daughters -- Radhika (8) and Sanchita (11) -- were on their way to Nashik from Pune and had boarded Intercity express.
They were not aware that the express does not stop at Kalyan where they wanted to change the train to Nashik, said police.
As the train stopped mid way on the tracks near Thakurli station due to the signal they got down but were mowed down by a speeding local train, police said.