Sorry, I didn't make myself clear.
In my opinion, she has no knowledge.
Firstly, it happened several years before she was hired.
Secondly, she is just the assistant who does some simple paperwork. She has no evidence, she has no role in managing (JS’s) money, she does not attend important meetings or participate in phone calls. The SEC and the FBI isn't interested in the assistant.
Possibly, not understanding this, Heidi became scared that she would somehow be held responsible. Possibly, not understanding this, conspiracy theorists were harassing her about it.
But legally, she was not in trouble, it was not her problem what her boss did with his buddies.
JMO