Distinction: living in not same as belonging to (do second generation adults *SGAs* who are plotting to escape count as members? perhaps not)
Sources not viewed by my own eyes: International Cultic Studies Assoc in Florida, European anti-cultic groups ...
This factoid in combination with the assertion that most people in cults do not call them that, means that lots of people have probably been in something Lisa would call a cult, but who would deny it.