Young Luna and Celestia in Everfree

Luna: HEY MONSTER! FEAR MY POWER!!!
Celestia: Do you really think he will be afraid of your little wind spell? Have you seen how big he is?
L: Hey! Me at least I try something!
Celestia sighed. She used her levitation for lifting a huge boulder behind the big guy and let it drop on the head. The creature dropped, falling unconscious.
L: W-what?
C: See? No need to show off. Just a well planned attack can do the trick. Come, mother is waiting for us.
Celestia began to departed the scene. But Luna was still looking at the fallen big guy before shooting at her sister.
L: Y-you know... I-I could have defeated him without your help...
Celestia paused and turned to look at her sister.
C: Then, wake him up and try yourself.
L: Uh...
She shifted her gaze from her sister to the monster then back at her.
L: Let's go home.
She younger sister ran to her older sister side and both walked, heading to the castle.
L: Who taught you about that?
C: Mother.
L: Umm... Do.. do you think she can teach me?
C: You'll have to ask her yourself.
L: W-what if she think I'm too young...
C: Well... I'll teach you myself.
L: *gasp* Really?
Celestia nodded.
L: Yay!
C: In one condition.
L: Aww... What?
C: You'll have to follow my order and...
L: Okay. And...?
C: You will promise me to think twice before doing something stupid with your magic. Promised?
L: Promised. *smile* I'm sure you would have beaten him by yourself if you wanted.
C: Uh... I don't think so...

Lovely work