Aand Your turn, Monochromatic!

The first thing that stuck out to me was the thing you wrote about her having extensive knowledge of Krav Maga and the likes. How, when? It's not mentioned even [i]once[/i] in your background that she practised martial arts of any kinds. It might have been insinuated, but it certainly wasn't written in there. You need to add that, and a bit more than just a "she also trained Krav Maga", please. Just throwing in a line like that feels cheap. 

Then there's her ability to get claws as a Human... While I did say that you do have some magic while being in your Human Form, getting claws counts as Shifting. I can't really come up with an alternative for what she might have since you have written nothing about what powers she has in her full Wyvern form. So yes, please write that as well. If it isn't written there, then you don't have the ability. Just like Gregory, even if he was still an earth elemental, wouldn't be able to move the tiniest piece of rock if he hadn't written it. Writing the character sheet is like creating the person. It [i]is[/i] actually creating the person. If you don't jot down what they can do, then they can't do it. The only compromise I can think of for her Human Magic might be that she can't really get cold because she's capable of producing a small fire inside her to warm her up (a pre-runner to her Fire Breath, or sorts). She's not really a magical kind of creature, but more someone focused around physical prowess, so I don't know exactly what/how much magic she'd have as a Human. 

I think the last thing that strikes me as off is when she woke up as a half-wyvern with a puddle of melted metal on the floor. Alright, her flames are hit, I'll give you that, but it isn't hot enough to just melt metal, let alone something as tough as aluminium. Maybe wake up and find her bed on fire, or just wake up to find herself wrapped in a cocoon of her own wings? 

Oh, and I almost forgot: Her scales can't stop a bullet. Just no. They might be tough and offer a lot of protection, but being able to stop a bullet is far too much. It might not go as deep, but it won't be able to stop it. A normal run-of-the-mill fist, however, won't really hurt. 

There's also this tiny bit:
[quote]When she turned sixteen, she began to work in her father’s business. It wasn’t anything a regular person might’ve given a thirteen year girl, [/quote]
It's really just a typo, but I thought you might want to know.