I do believe she thinks her brother is completely innocent and taking into account the terrible stress she has been under I feel this in many ways justifies her behaviour under such circumstances...
I agree with you Elspeth, but being the type of person who acts and then thinks of the repercussions , I know that these will not endear her to anyone in authority. I feel she may not have understood why the court was being cleared and was making that she could stay even in a closed session (I don;t know if this correct JMO), she would probably be so nervous and overawed in the situation that she was focusing on one thing only. I do feel very sorry for her, and will say a prayer for her tonight.