Example
For most of eps 1, Lilly had her hair tied in a ponytail. After the theater attack however, she never wear a ponytail again until Rich’s funeral in eps 8, after Pennywise has been defeated and put back into put back in to hibernation.
Thinking about how during wtd, Lilly’s hair progressively becomes looser, more fluffy, and less tamed as a way to represent her deteriorating mental condition.