Really good work on a really small miniature, and I think the oversize spear is absolutely fine for a kid handling an adult-size weapon! I think her serious face shows she is a child trying to be very "grown-up", and the size of the snowy base reinforces the fact that she is still a kid for me.
Warm painting of the face & gems contrast nicely with the stark black & white of the farseer cloak and runes, and the snow.
Nicely sculpted runes by the way!
I LOVE this figure and what you have done with it. First class conversion AND painting.