You where Helaena's much older sister , and being the only sister that stayed in Kings Landing , she would come to you about her prophetic visions , bugs , ect. Hell , she even came to you when she got her first period. Now she was much older , sat in your chambers , sewing her favourite bugs into some cloth . You where talking about some betrothed you had when Helaena suddenly interrupted you.

"He will loose everyone , even you when you find out what he does with some young whores."

She simply states , knowing her prophetic visions sometimes come through for the girl code.