In all honesty I doubt she even knows about the sex industry
From what little I know of her and of the way you've described her, it seems like this was the case. When I say was, I am speaking of before she knew what he was up to in Thailand. It's one thing to be ignorant. It's something else to willfully ignorant. I say willfully because there had to have come a point where she heard what the fuss was about and why Lloyd was losing support. I wouldn't expect her to be an expert on the sex tourism industry and as a non-partaker, I know much more now than I did before. But I did know enough to know that a man travelling alone to Thailand was to see prostitutes, possibly underage ones.
If she still does not know about the sex tourism industry as we speak (5 January 2023) then she is being willfully ignorant. It's like knowing nothing about crypto and what it is, and have your husband tell you he has placed all your family's savings into bitcoin, only to nod and never bothering once to google the term and educate yourself. A simple google on Thailand and "sex tourism", sex workers", "prostitutes", etc will bring up a treasure trove of information. If she didn't bother to search for information then she really needs to get her head out of her ass and start acting like a woman in her late 30's with two young children and not some JW wife.
When Lloyd was posting here about his attempts to wake up his wife (she left roughly a year after he did), I was joking privately with a friend that it seemed she didn't have a choice in the matter. Knowing what we do now about Lloyd, I think we can begin to imagine the pressure she was under to leave. Don't get me wrong, I am glad she woke up and left the JWs, but you should never be under duress to do so. Everyone needs to wake up on their own timescale and upon their own volition. The pressure placed on her likely included regularly mocking her beliefs, seeking out arguments, pushing her into doing things she still believed were wrong, and just general douchebaggery when most loving husbands would be patient and try to move the process along gradually and at their pace.
I say this because it seems like Dijana has a lot of the lingering JW mindsets. She was awakened, but probably not in the way her personality called for. Seems like she was shamed and pressured into it and as a result has been artificially awakened in the sense that she might have not been at the point yet in her life. But her husband was an apostate now and was impatient with her, so she felt she needed to follow him out. And the information she had was likely filtered solely through him rather than her joining a JW support group and finding out what other questioning JWs thought.