DM Ashura - NeoMAX For her general background/theme music.

Fireflight - Unbreakable Because it's awesome and defiant and angry and nothing can stop this girl when she gets going.

The Rasmus - No Fear Like the above, I feel like this song was practically written for Vin, a character who stands up to gods and tyrants. Vanessa's not quite there but she'll fit soon enough.

And more when/if I think of them!