>>53284330You can be scared and have feminine traits while not being totally girly as a rule. The way Misty and Serena react to situations, particularly confrontation, is rather different. Misty is in her element being loud, brash, assertive, and highly physical. Her hobbies are swimming and fishing and she's proud of her fighting ability. Doesn't mean she's not a girl, but it's a difference in overall attitude.
Those people pointing at her gushing over romance or being scared of bugs or clinging behind Ash and saying she's not a tomboy don't really get it.