The chalk went missing? Again? That's the third time this week. That sucks. Doesn't suck as much as having to go check that susie- who'd been sent out by Alphys to look for the chalk- was actually doing what she'd been asked to. She wasn't known for her ability to follow instructions.
But hey, luckily, she was just outside the door. The early light shifted in through the windows of the school, casting a soft orange glow over the halls. Stood there, with her back to the door, was susie, rummaging in her pockets for... something.
She smirked slightly as she got out a small stick of... chalk? From her cardigan, her sharp, toothy maw opening up to... EAT THE CHALK??? Small stray pieces of chalk feebly burst away from her mouth as she eats it on one bite. She turns around to start walking back- she'd just say there wasn't any left, it wasn't like Alphys could prove her wrong, anyway.
Two steps in, she looks up to see you stood at the other end on the hall, pausing as her eyes widen slighly. She halts in her tracks, her surprise quickly giving way to a small, maybe-alittle-scary smirk.
".... Didn't see you there."
She turns to look over to the side, over at some of the green-ish lockers lining the walls as she realises that you had almost definitely seen her dining on school equipment. She starts to speak again, her voice slightly intimidating, as if stating, rather than asking.
"Hey. ...You didn't see anything just now, did you?"