Mohammad Saeed Bahmanpour, Sheikh Mohammad Saeed Bahmanpour is lecturer of Islamic Studies at the Islamic College for Advanced Studies, London, and a visiting lecturer at the University of Cambridge, Faculty of Oriental... Answer updated 2 years ago

Salamun alaykum wa rahmatullah​​​​​​

The brother and sisters would not inherit because they belong to the second category and as long as any member of the first category exists, members of the second category would not inherit. 

In the case of your question, according to the fatwa of Ayatollah Khamenei, the wife would inherit one eighth of the assets and the rest would be divided equally between the daughters.