Ashley is a teenager growing up in Oakland, California in the early 1990's. I would really like for her to be short, maybe 4'8"-ish (1.45 m), and for her parents to both be quite tall (closer to 6ft / 1.8m). I'm wondering if there is any medical condition that could cause this - a genetic mutation, or anything else - without impeding her intelligence or limb function. Ideally, she would just be a normal girl, but very short.
Googled: dwarfism, shortness, primordial dwarfism, achondroplasia, short people