J.K. Rowling on Draco Malfoy: author reveals how the Hogwarts students turned out years after the events of "Harry Potter and the Deathly Hallows." Malfoy got a terribly bad rap throughout the series, though it's evident the character was torn between his duty to family and his inner good.
New material on Harry Potter shed light on how the characters fared after Hogwarts. There was a glimpse at the end of "Harry Potter and the Deathly Hallows," with Harry, Hermione, and Ron reuniting years after Hogwarts, all grown up and with children of their own. It's evident J.K. Rowling still had plenty to say, as 12 Days of Harry Potter revealed on her Pottermore site.
With regards to J.K. Rowling on Draco Malfoy, it turned out the character turned over a new leaf later in life, after going through some serious struggles:
"Draco married the younger sister of a fellow Slytherin. Astoria Greengrass, who had gone through a similar (though less violent and frightening) conversion from pure-blood ideals to a more tolerant life view, was felt by Narcissa and Lucius to be something of a disappointment as a daughter-in-law.
They had had high hopes of a girl whose family featured on the 'Sacred Twenty-Eight', but as Astoria refused to raise their grandson Scorpius in the belief that Muggles were scum, family gatherings were often fraught with tension." (cinemablend.com)
Malfoy turned his back on his family's purist ideals after the name lost its status, in the wake of Voldemort. Malfoy was unable to obey Voldemort's command to kill Dumbledore, which exposed his internal struggles. J.K. Rowling hinted Draco Malfoy could also have responded the same way when it comes to killing Harry Potter, if it came to that.
J.K. Rowling elaborates on Malfoy in an essay:
"I imagine that Draco grew up to lead a modified version of his father's existence; independently wealthy, without any need to work, Draco inhabits Malfoy Manor with his wife and son. I see his hobbies further confirmation of his dual nature. The collection of Dark artefacts harks back to family history, even though he keeps them in glass cases and does not use them.
However, his strange interest in alchemical manuscripts, from which he never attempts to make a Philsopher's Stone, hints at a wish for something other than wealth, perhaps even the wish to be a better man. I have high hopes that he will raise Scorpius to be a much kinder and more tolerant Malfoy than he was in his own youth."