[Cruelly opens her mouth before closing it and hesitating. Just one day... One day of cruel torture in order to help Twilight achieve her destiny. She realizes it's Cruel To Be Kind, but at the same time... she still doesn't want to lose it. Cruelly's eyes start watering up as she begins whimpering like a child, om the verge of crying.

Was it mentioned that she technically IS a child?]

B- but... I don't wanna give away my cutie m-mark...