Board Thread:Speculation House/@comment-67.204.239.69-20140926005005/@comment-25399914-20140926020614

Monty has stated that she wouldn't be that much older then the girls. which means she would have been a child when they were.

They have known Qrow all there lives, they live close by to him, they attended the school where he is a teacher, there farther also works there, he is there uncle so probably visited them at home and vice versa.

They have had a lot of contact with him so personally I feel it is unrealistic that he would not introduce them to his daughter.

They could be estranged like Yang and her mum but you also suggested that she dislikes Qrow because of something that happened during childhood but that would imply that they knew each other.

She could know Qrow. she could have been one of the students at Signal and left before Yang started as she would be at a guess 8 years older.