Half sister or half brother it is. Still I can only imagine how wrong this feels to say the least for many. And I totally get that. Not that the movie is completely only focused on that. But the relationship is front and center when it comes to the siblings.
Other characters, possible lovers, are thrown in for good measure. And especially the brother has quite the other option ... I would say the better one, considering not just the relationship to his sister, but also the mental state of the characters ... but you can't choose love can you? Not even when she is in an abusive relationship.
By the way the dialog (subtitles) "we were looking over some papers, maybe I leaned in too much ..." is almost comedy gold ... in a different movie. Still have to admit that got to me. Worst excuse ever btw.
