She is a freelance criminal who is hired to clean up crime scenes whether actually clean up or she may kidnap a witness and threaten them to be quiet or keep them out of the way so a plan can go off for her clients. As an example she may get called in after a burglary and take the victims with her to make sure they remain quiet or take them out of the home before the break in occurs. She usually says little when on the job and tries to maintain  a professional attitude and maintain discretion.