The Crystal Gems are not just protectors; they are soldiers suffering from Post-Traumatic Stress Disorder. Pearl constantly relives the loss of Rose Quartz. Garnet’s stoicism is a shield against an uncertain future. This is never more clear than in Rose’s Scabbard (Episode 45), where Pearl nearly lets Steven fall to his death because she is so consumed by grief and jealousy. It is a raw, uncomfortable portrayal of how trauma warps even the most loving characters.
Season 1 excels because it refuses to let its characters remain archetypes. Steven Universe - Season 1