Funny that Astrid's and Diego's powers were so similar. I hadn't even read through that part of his app. Thought of a couple things to make Astrid unique from him. Her center is like the core of the earth. Its heating the rest of her body, acting as a primary source of her fire. To continue to live she has to keep it "alive" by keeping it warm and constantly fueling it. If the temperature drops or she swallows too much water into her lungs it could extinguish it. Instead of having a need to constantly release her fire like I previously said, maybe she only has too if she overheats the core. When she overheats it, instead of the body temperature bothering her, though it would still rise, her veins glow a red orange, as the core shines through the semi-translucent skin of the veins, kind of like shining a flashlight through your hand. Would something like this be better for my character?