Answer:
(Fatwa: 1722/1327=H/1429)
It is necessary to cover hand and face when outside, likewise before the mahram men. These rulings are proved from the Quran and Hadith. It is not necessary to be in hijab while inside house, yes she should observe veil before the adult brothers of yours.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
