Don't Fear The Reaper

The grounders know the Reapers as the flesh eating crazy people who live to kill whomever they see. On the Ark, Reaper is known as a young teen with an abnormally white hair, who was known for murdering 7 people with no remorse. How will the 100 prisoners survive on Earth when they have an infamous murderer on the loose? Will she fight with them or against them?
Bellamy Blake - OC