There are many reasons dragons mark Shadows. You may have to mark a Shadow because you got physically hurt
Would being hurt mentally or emotionally also call for making Shadows?
Also, on the subject of trauma, let me share with you this gem I got when messing around with the Incorrect Quote Generator a while ago. I got a few, but this was probably my favourite:
Fellwing: We call that a traumatic experience.
Fellwing, turning to Shieldwing: Not a "bruh moment".
Fellwing, turning to Stargaze: Not "sadge".
Fellwing, turning to Skobeloff: And DEFINITELY not an "oof LMAO".
Tamba: What if people had food names and food had people names?
Fogdance: Hey, spaghetti, we’re having Tamba for dinner.
Pleexem: What is wrong with you people?
Skobeloff: Shut up, chocolate.