Kalastryn had been sleeping aboard the rising dawn before the flash, she woke up a while after it in some sort of dark hole, and only waking because she smelled blood... her own blood, to make things worse she'd been shoved in one of the lockers in the girl's changing room... but how could she fit?! she felt around and braced her back against the opposite wall, and with both feet kicked the locker open. which was the locker 5 to the left and one below to mele's locker, she then saw herself in the mirror and, with blood dripping from her forehead, recognized she was a tiefling again... and only a few years older than mele. around this age she started training as a wizard rather than a sorcerer... she had learned every arcane spell below level 5, but could only use a few at a time, before she had to read her spell-book to recharge and reconfigure.
"What the hell?! Why was I in that locker? and what Happened to my clothes?!" she exclaimed before examining that the clothes she had on... she wasn't wearing anything red. In this body, that's a problem!
she started digging around some of the student's bags before she found a ruby embedded locket and put it on, then she saw the hall monitor. Her bleeding had stopped but she had just been caught stealing. So she quickly tried to talk herself out of trouble.
(rolls diplomacy- 17) "Sorry for the theft ma'am, though honestly a life was at stake."
She didn't quite buy that, seeing as how she just put it around her neck.
(rolls bluff- 17, no better) "You see I detected a curse on this amulet here, I pity whoever owned it before, a trip to the nurse's office is in their future."
That wasn't easily bought either, so she decided to flip back to reality and explain the situation further.
(re-tries diplomacy- 33) "alright, my previous statements were... well one was true and one was tweaked. A life was at stake, and there is a curse... the life at stake was mine, and the curse isn't on the necklace, but on me. You see it's a curse on my family that if we don't wear red, we fall unconscious and bleed out. You may notice my clothes are blue, and gray... and smelly" she noticed she was in gym clothes, and they hadn't been cleaned in the last few... whenever. "although I don't know how I ended up in that locker, or who changed my clothes, but if it wasn't for this necklace, I'd be dying at the moment... when I find a substitute I can rightfully own I will return it I swear."
With a thorough explanation in place, and partial truth to the statements before it, and the intent of returning the stolen item... the hall monitor thought for a moment and while she couldn't condone stealing... it was more or less just borrowing, and without any other choice presented to Kala. She then remembered hearing the bell for class in her sleep... and seeing as how she's in a locker room, and in gym clothes, she assumed she should head to the gymnasium, and started off, taking note of Mele, but wanting to get out of this situation as soon as possible.