Starlight Glimmer has been reformed and is now living in Twilight's castle as her student. Though the alicorn wants to give her the benefit of the doubt, she can't help but have a nagging worry in the back of her mind: what if Starlight has a relapse?
But it's alright, because Twilight is definitely not going to become paranoid and freak out.
Nope, not at all.
(Written as a gift for Amethyst_Dawn)