Lizzy...?

After the prom with Doll's massacre of her classmates, Lizzy seemed to change around people.
She became distant towards her friends, and started spending more time at home...
She came into school that day, clearly tired and ragged. She wasn't wearing her usual cheerleader outfit but baggy shorts and an orange sports t-shirt. She had clearly been affected by the prom, as well as Doll.