Considering what we know about Season 10 giving the protagonists some Cold War-era paranoia over the communities getting breached anew by the monstrous Whisperers, Birch’s youthful look could definitely come into play when she’s around other characters.
First thought: Gamma looks like she’s about 12 years old, even though the actress is 37.
There’s something about that scraggly hair, the dirt-covered face and the super-light eyebrows that makes Thora Birch look barely older than her Ghost World days.