If you want to be one of Aunt Riley's humans, then I can't think of any restrictions except that you wouldn't be from Riverside and be mentally dominated by her. So you wouldn't be there because you were afraid to escape, you'd be there because it wouldn't occur to you to, even though you could become a meal at any time. But of course, something could always break the domination and allow you to come to your senses and realize "holy boop! I could become a meal at any time!"

Or you could be Jenny or Heidi, who are Riley's personal servants (no, not in /that/ way ) and so off-limits for being nommed.