[@Liliya]

She"s definitely childlike. The main canon Evvie has an unknown birthday/age but is reasonably assumed to be in her upper teens. Well, actually this unknown age fact might be retconned because someone did find and raise her a little when she was a baby so he would obviously know within the month. Maybe he never told her for some stupid reason, like neither care about birthdays as some cultures don't. Some reincarnations of her would be common to wear normal clothing but for this main canon Evvie it would be highly unusual, which would be plenty enough to raise eyebrows. Shes accepted as is by her group and few people question her now so she doesn't feel the need to wear additional, troublesome clothing when she doesn't have to. Her past quirks are too engrained in her behavior in this reincarnation.

Her best armor is summoned from a specially forged bracelet when she breaths her fire on it. As such it wouldn't stick around to be able to be added to something else. I did just get the idea to have her wear armor made of melted down dragon scales which would be better then that armor but can't be summoned so the trade off is she must wear cumbersome armor all the time, which she hates (an unenhancrd human would be rendered completely crippled under its weight). The armor she has in the picture I'm drawing is very light and better than her first outfit in defense, so is basically just upgraded normal armor.