Periodica : Hydrogen

I've dreamt to create something like this for a long time, like, finally  I know I'm not the first, and this is my OC for this element (will be posting the rest later! hope I can make lots of these, completely, hopefully). kind of fantasy AU.

Well here's the details:
Name    : Hydrogen (or Hydee for short)
Height   : 144 cm (the idea is from the atomic volume actually, 14.4 cm3/mol, at least I just wanna show that she's tiny  )
Likes     : the sky, stars, something that flies, starts to love some pets and plants since being around Oxygen and Carbon, and, quite surprisingly for a girl like her, automotive
Dislikes : failures (she's kinda hard to move on), heat
Power   : invisible flames (it's still kinda hard for her to control it)
Appearance: purple, lavender-ish coloured hair (because that's the colour of glowing ultrapure hydrogen in a picture I found), wing shaped hair ornaments which is tilted up(my first thought was because of she's the lightest element, she can fly easily and she's a gas. I wonder if I'll give wing pattern/ornament to all gases OCs), a purple necklace with pendant of a heartlet (what I call electrons here, it's heart shaped), everybody's got a tattoo with the pattern of their heartlets on their wrist/lower arm but it's invisible for her in this pic, light blue dress (inspired by water, hydrogen itself means "water forming"), and she's wearing the coat (because I think a working person would usually have it to put on?). I still think her design should be simpler, though.

diligent, hardworking, active, and thus respected by others. kind of a reliable big sis to her twins Deuterium and Tritium. she's very careful with her power since it explodes easily and once she messes up, she's kinda hard to forgive herself, like that time with the air balloon (though watching those balloons floating away is still enjoyable for her). sort of a childhood friend to Helium, though she doesn't really remember what happened with them in the past. becoming closer to Oxygen and lots of other elements after coming to earth. lots of people and friends say she's the "powerhouse" or "energy" they've been searching for, but she still don't have a clue about what that means.