This, plus the hibiscus flower, being "a bit of a flip", and using a different flowery name she prefers, makes this person sounds more like Marion's lookalike from the Hermes Far Eastern Shining group, who was investigated in episode 8 of the podcast.
A credible tip suggests that Marion Barter, missing for 22 years, may have been lured to a sect based near Byron Bay.
7news.com.au
Those kind of groups are keen on people with plenty of money, and often coerce them into financial exploitation. If Marion did have a lookalike in that group, she may well have been making regular withdrawals in Byron Bay.