I'll admit, I have a thing for violins and giant, percussive beats that revebrate in your chest with their intensity.  So those big swelling climactic parts in a song?  I'm all for that more times than not.  That's probably why I have so many copies of the Song of the Dragonborn and the Dragonborn Comes on my Youtube playlist lol.  Just that epic level of music where you want to take on the dragon and you just know you can win because you're going in with all that you have.  Eternal Flame did that for me and I had to stop and pause what I was doing lol.  BUT, for Nightstar herself, I'd go with Star Sky because it's a mix of her personality traits.  She's soft yet hard, gentle yet firm where it counts, she's a conflict in orange skin yet she pulls it off nicely, if that makes sense.