Luna,
I know you're busy, but things are starting to get weird over here. Twilight's apparently turned into an incorporeal undead, possessed a corpse, found her old body she was forced out of suffocated, and is now attempting to use that explosive spell you declared 'deplorably messy' last time. Supposedly nopony should be killed this time.
I could use some advice about how freaked out I should be.
Love,
Celestia
To my most faithful student, Twilight Sparkle,
I've notified Luna, and I would prefer if you would wait for her response before carrying out any further plans. Especially because we weren't willing to confirm that spell is safe to cast on a third party.
Your loving mentor,
Princess Celestia