Kung-fu master!

The plot is understandable for the initial 50 minutes or so. The emotions and feelings that are not meant to be shared or are considered taboo are brought out innocently and "understandably". But it all changes once the plots takes you to London. It remains no lonher 'understandable" and begs the viewr to as the question: "why?'. Birkin's mother's suggestions of handling her emotions still baffles me, and I just can't imagine that conversation happening in any way. That scene and then the subsequent 20 minutes before the end just doesn't do it for me and what could have been a genuine story of desire, feelings, boundaries, temptations, ethics etc., turns into something unrealistic and unbelievable.