Here is how The next day and Twilight feels guilty goes in Twila Runs Away.
The next morning.
Princess Yuna: Hi, Nyx. Where's Twila?
Nyx: I don't know. Twilight, Where is Twila?
Twilight Sparkle: I don't know. I thought she's in her room.
Nyx: I've checked her room and all what's left was a note.
Twilight Sparkle: A note?
Nyx: Read this.
Twilight Sparkle: (reading the note) Oh no! Twila ran away!
Nyx: That's why she's gone.
Princess Yuna: But where could she gone off too?
Twilight Sparkle: (crying) What have I done!
Nyx: I hope she's okay.
Princess Lilly Sparkle Rose: Me too.
Nyx: Twila accidentally broke Twilight's special plate.
Twilight Sparkle: This is all my fault.
Dusty Crophopper: Twilight, It's alright. It happens.
Princess Yuna: What should we do now, Princess Twilight?
Twilight Sparkle: (determined) We must start a search party.