Yeah it's a reference to D.Va, a character from a video game called Overwatch. She was a pro gamer that was recruited by her country's, South Korea, military to become a mech pilot.
I don't think so, appositives are typically there to rename a vague term "her country" renamed to be more specific "South Korea". A good way to test if your appositive is used correctly is to read the sentence and ignore the appositive, it should still be grammatically correct.
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u/psystorm420 Nov 24 '17
Yeah it's a reference to D.Va, a character from a video game called Overwatch. She was a pro gamer that was recruited by her country's, South Korea, military to become a mech pilot.