Okay, so in the story I'm currently working on, my antagonist (a female warlock named Sharon Pratt) is trying to destroy the non-magical population. She disguised herself as a newsreader in New York City to be on the 'inside', and to be familar to and respected by the non-magical humans. My question is actually about her motivation. The reason she wants to destroy the non-magical population is to avenge her mother's death. Her was burned at the stake by the non-magical humans (yes, warlocks live for hundreds of years) for practicing witchcraft. My question(s): Is her motivation realistic? Is anything out-of-place? Does it bring up any questions?