Believing that she has come to depend on her magic too much, Princess Celestia has challenged Twilight to find a life outside of it. As Usual, Twilight has over-reacted, and it is up to her friends to put her back on course.
Yeah…Celestia might not know Twilight as well as she thinks she does. I know she wanted to avoid another Sunset, but I think she pushed Twi too far in the other direction, since even now in the show Twi still stresses out over pleasing her.
@Background Pony #DDBE
I can imagine it has the potential to cause a lot of damage which is why it is forbidden and twilight violated a rule by using it which technically makes her a criminal. Even more so she violated Celestia’s trust because Celestia gave twilight free access to it unlike other unicorns expecting the mare to be responsible.
She could have learned about it in a dream or by simply asking one of Twilight’s friends.
Edited
I can imagine it has the potential to cause a lot of damage which is why it is forbidden and twilight violated a rule by using it which technically makes her a criminal. Even more so she violated Celestia’s trust because Celestia gave twilight free access to it unlike other unicorns expecting the mare to be responsible.
Edited