Kate Kane seems to have no relation to Bruce Wayne or Batman. She's just some woman who had a motivation to become a crusader. The Robins were taken in by Batman and at least Batgirl trained with Bruce.
- Under what justification besides in name does Batwoman have in being part of the bat family? Did she get permission to extend the "franchise"?
- Was Stephanie Brown (as Robin or Batgirl) any different?
- What about Cassandra Cain?