ANSWER:

She is non-mahram to him and must not mix with him nor communicate freely whatsoever and must abide by the proper hijab at all times. As for socks, the feet are part of her awrah and she must cover it while going out or when in front of non-mahram men.

sheik,our cousin lives with us and my brother is present.she wears hijab but no socks.at home they say she is family.she enters our brothers room and our brother enters the room she stays though she wear hijab without socks.pls sheik are we doing right? I am not happy at all.