Chessa hadn't meant to shift. It had been years since her first involuntary shift, but they still happened here and there when she was stress, scared, or nervous. She was always working on trying to completely control her shifts, but still struggled at times. Her master's volatile attitude didn't help in regards to control her shift, but perhaps she could use it in the future. Maybe he'd make her finally gain complete control of shifting.
Despite being called a whore repeatedly and being threatened with the stick again, Chessa did eventually calm down. Shifting back into her human form, she laid flat on the floor and looked up at him with only her eyes. She knew better than to make eye contact. "I'm sorry, master. I didn't mean to shift. I've got it almost completely under control, but sometimes stress and fear cause an involuntary shift."