"Well, it was while I was staying with Harry - the Master," she answers. She still tends to think of him as Harry, even though that's not his real name, nor the name most people associated with the Doctor know him as. "He seemed to treat my mind as a playground, honestly." It's interesting that he, who had an interest in keeping her safe and happy, was so careless and invasive, where as Zagreus who probably couldn't give a shit, only did it with permission.