Defenders of capitalism would claim that the young woman was not murdered by premeditation; that is, neither the system of capitalism nor its specific members (the young man, his mother, and the ballet troupe director) deliberately set out to do her in.
This is one of the reasons the movie is so meaningful: it's a moving depiction of capitalist murder not by design but by its systemic structure--by its very nature. Capitalists do murder deliberately, but massive destruction of workers also occurs because of the brainwashing and lethal indifference of the capitalist class and its members.
The capitalist movie industry demonstrated its total disregard for human life by portraying this motion picture as nothing but a touching love story--mindlessly disregarding its actual depiction of the murder of a working class young woman by the indifference and obliviousness characteristic of members of the capitalist class.
The murderous episode depicted in this movie begins seemingly innocently enough with a wealthy British officer inadvertently meeting and falling in love with a working-class young woman, a dancer in a ballet troupe.
Concerned only with his own feelings and totally indifferent to Myra's situation 
in life (one step from destitution), Roy asks Myra to marry him. Roy is so full of himself and so uncaring for Myra that he's unaware that her accepting his proposal means that she is dismissed by a devilish ballet troupe director from her dancing job--the only thing keeping her from abject poverty.
Before they can be married, Roy's orders are changed and he leaves London without seeing Myra or making certain that she has money enough to get by. Roy's egomaniacal indifference to Myra's plight begins the process of her murder!
Myra, receiving no support from her totally indifferent capitalist fiance, meanwhile tries to find any job she can, but as is usual within a capitalist economy, as an untrained worker she cannot find work. Myra, at the point of starvation, is forced to turn to prostitution to keep herself alive.
Though informed by Roy of his fiance in London, Roy's mother in Scotland is too busy with her inane frivolities to make sure Myra is okay.
The mother finally deigns to contact Myra and tells her to meet her for tea at a fancy London cafe.
While Myra is waiting for the mother to appear, she happens to read in the newspaper that Roy has been killed in action. Devastated, Myra faints, and the cafe manager resuscitate her by having Myra drink strong spirits.
Out of lower-class prejudice and fear, Myra does not inform the woman of the news of her son's death. Myra is somewhat tipsy when the mother arrives and the haughty upper-class matron allows herself to be offended and rushes off in a huff, totally indifferent to the plight of this girl who is her son's betrothed.
Months later, while turning tricks at the Waterloo Railway Station, Myra is startled to see Roy arriving by train--the man she thought was dead.
Totally oblivious to what's been happening to Myra and heedless of why she is at the station, Roy 
bustles Myra off to his ancestral estate in Scotland where he plans to marry her. Roy is completely insensitive to what's going on in Myra's thoughts and feelings, obsessed with his own sensation of elation.
