The guy that she previously stabbed was moving when Mia first sighted him but he stopped moving and the arm he stabbed gradually began becoming black.
Mia had only one person in mind that would do this. Mr. Davis felt Oscar was gradually beginning to regain his memory and he knew the cause was Mia being in his life.
He felt he had to eliminate her. Since casting spells at her does not work he decided to go with dealing with her physically but not doing it himself so he paid some young vampires and gave them the syringe that was filled with a potion that would make anyone dry up.
The syringe was made magically by Grandma Felicia but it was stored in Mr. Davis's office as at the time it was created they had no way to actually use it on Mia. The syringe needle once it gets in contact with
