Distribution of inheritance if a woman passed away without any Muslim heirs besides her husband

Q: Please could you state the Islamic shares on the following scenario:

A Muslim female passed away. She was a revert Muslim and left behind
A Muslim husband
Her late brothers daughter who is a Christian
Her late brothers son who has children and all are Christians.

She does not have any children. Kindly state the Islamic shares of inheritance in this case.

Selling half niqaabs

Q: Is it permissible to sell half niqaabs where eyebrows and forehead are exposed just to encourage sisters in their journey of covering the face ? (because a lot of times in the beginning it's hard for sisters to take a full niqaab).