If Heidi was working in a small office <modsnip> and perhaps a couple of other people, she would overhear conversations frequently. Even if she wasn’t made aware of some details, the tenor and implications of those conversations would be apparent. She has been working with these entities for over a decade. She has to be cognizant of some of the purposes of these LLCs.
When she was hired, Heidi probably had no idea her employers were controversial and potentially involved in fraud, but she was educated and worldly enough to realize something was wrong over time. It is possible that Heidi was asked to be a public face for some of these entities, dealing with investors much as a realtor would, and answering questions.
As
@Mimi on the beach notes, she’s well paid. Los Angeles is a very expensive place to live, and she has a nice home and a nice car. Her ex might be sharing the cost of the private school, but she appears to be living an affluent lifestyle. If she’s a clerical employee, how would she sustain her standard of living?