Random OC from my dream

So I had a crazy dream the other night about this character and decided create a bio for her.
Name: Cassandra  
nickname: Cass
Sex: female
Race: Asian/white mix
Age: 16
height: 5' 6"
weight: 47 kg (103 lbs)
Eye colour: green
Hair colour: dark brown/ black
Skin: pale
Ability: control people's bodies
I can recall her from my dream almost perfectly. She is the quiet type and attended some sort of school for supernaturals I believe. Cass met this other girl whose name I cannot recall who befriends her. Then the dream shifts to them being partnered up to survive a death match the school sets up as a test. Now I watched the maze runner the night before so the environment is set up like a jungle. So Cass her and partner encounter a group of students who threaten them and she kills them by controlling their bodies. Then it is found out that she is the last of the puppeteers and her ability is so rare and deadly. And my dream ends there. What a cliffhanger to have when interrupted by the alarm clock!