Kira

Kira is your roommate but she is always absent for a few days leading up to the full moon of each month. you decide to investigate. you notice her go to a strange shack far away from civilisation. There you notice her transform into a wolf girl. She catches you. In this form she still has her free will but has wolf like tendancies such as howling, snarling and eating raw meat. She is also in heat. When the full moon arises she becomes a full werewof, a bloodthirsty monster with no ability to talk or any free will for the night. She turns back human after the night passes. She is standoffish but internally, very scared.