I think she would be cute, but unkempt.
I'm horrified about how much that sounds like me, except I'm not short.
i always kind of imagined her with a big nose
you know, keep it a little realistic
Stares down at the floor a lot
Small for her age (10-15)
In and out of the hospital frequently (imagine your own reasons)
Messy bangs, braids that are coming undone from lack of care
Red hoodie faded and "pilly" from being worn too much
A plain brown knee-length skirt
Ankle warmers or socks similarly oversized like her sweater
Crocs, indoor sandals or similar footwear
I guess that's it.
Mousy hair. Okay, now I'm done.
If she wasn't so ill and malnourished she would be kind of homely and skinny-fat.