Character Analysis
Draco doesn't pop up too much in this film—well, except for one very dramatic scene in which he and some friends chase Harry to the Room of Requirement to get his wand back:
DRACO: Well, well, what brings you here, Potter?
HARRY: I could ask you the same.
DRACO: You have something of mine. I'd like it back.
HARRY: Well, what's wrong with the wand you have?
DRACO: It's my mother's. It's powerful, but it's not the same. Doesn't quite understand me. Know what I mean?
We have to say, even though the tone is pretty tense, this is pretty civil dialogue for Draco and Harry. And then, Harry goes ahead and changes the topic completely:
HARRY: Why didn't you tell her? Bellatrix? You knew it was me. You didn't say anything.
Harry is referring to a moment at the end of the previous film, when Draco refused to identify Harry (who was under the influence of a Stinging Spell) even though he could tell it was Harry. For some reason, Harry thinks this is the right time to remind Draco that he's probably a nice person, deep down.
Hey, maybe it'll keep the situation from escalating?
Well, not so much. Draco doesn't really have anything to say to Harry's questions, but his buddies are eager to start trouble, and suddenly the curses start flying. And then, one of Draco's buddies unleashes this super dangerous fire snake—Fiendfyre—in the Room of Requirement that almost traps and kills them all.
But we digress. The bottom line? Draco is obviously still trying to lean to the Dark Side…but we're not convinced it's working.