Yellow power
Without even moving her body, Erin could both feel and see the new found energy rising within her. Since joining the school, her aura and power levels had been the same, however, she noticed that there were instances where it would increase.
She noticed it when sparring against Leo as well as Edward, and when she was about to hit Nicu outside of the school. The difference in power was noticeable but right now, it was on a different level altogether. She didn't know if it was because of anger, or possibly just because there were more vampires she classified as enemies in front of her.
Looking at the field she was trying her best to assess the situation. Two students were still on the floor, they looked to be dead, and one student had run off into the woods somewhere. Amy had gone to try and find help, and Xander was probably too hurt to get back up. Otherwise he would have retuned by now.