Hey Kaben I'm not Lug of course and I don't have final say on anything but I think there are some things you might want to consider.

Firstly, another mage, come on guys I know magic is fun but we've got to get some axe and lance men in here somewhere.

Next and this goes out to everyone, the Rationale section is not meant just to explain why your character would want to be one of the Reclaimers but also to explain why the King would want your character as one of this group. This is after all first and foremost a peace keeping mission and I think any reasonable ruler would recognize the fact that having a dangerously unstable, powerful fire mage who seems to have no qualms about destroying everything in her path might not be the best idea. This sort of goes back to what we were discussing in the Heroes of Beacon RP but why would this girl who you plainly stated has a shattered mind not be incarcerated in a mad house. I'd imagine in a real Fire Emblem world they would have mad houses designed to hold mages.

Lastly I find it just a little worry some that her personality can be summed up by: "Oh fire, pretty. Let's burn it all."

I'm not trying to be mean but I think this is going to create major problems within the story, not the fun conflict problems but the not so fun logistical problems of "how did this happen and how are we going to get everyone out alive" problems.