The story I read was both drug use and sex addiction. But since she wasn't in even a full season and despite her appearance in three films, Rand doesn't seem to be included as one of the main cast in some of the recent merchandise which seems directed at more passive fans with only a general knowledge. I'm always pleasantly surprised when Rand (and Tasha Yar for that matter) does show up or even mentioned. Their appearances seem to be service to long time fans, hence my question to Nanjin if she is too much of a "deep cut" character for EXO-6 to include her.