I am currently trying to find music about catching things on fire and destroying stuff for a rp character. She's a bit of a pyro.
Any help would be great.

One that jumps out for me is 'Burn the Flame' by Roky Erickson. It got used in that classic zombie movie 'Return of the Living Dead' in a scene where a character immolates himself rather than be a zombie and that made it catch my attention ever after.

But don't take my word, listen for yourself and see if it works for ya. ;) YouTube - Roky Erickson - Burn the flames

A bit too tamed down and his voice bugs me x.x

Kidding, kidding.... but maybe Thrice's first "book" of their concept album The Alchemy Index. It's only six songs in that 1/4th of it, but it's different and all fire themed. There's even one called The Arsonist.

XD Funny!

As for the second omg it's perfect! -adds to her character's playlist-
Woot!