The Last Elf of Lanis (The Wealdland Stories Book 1)

Map of Wealdland:

http://thelastelfoflanis.blogspot.com/2013/02/map-of-wealdland-bumped-to-top-of-queue.html

Wealdland is being overrun by troops of vicious garonds, led by the 900 year old, evil lord of magic, Deifol Hroth. Humanity is on the brink of extinction.

Iounelle, last of the elves, embarks on a dark journey of revenge for the eradication of her race by the garond army.

One of the humans she rescues from the small village of Bittel knows how to find the sword of power, the Mattear Gram, the edge in the coming battle.

Now if they can only stay alive long enough to get it...