I I just can’t figure out whether Wendi knew about the plot in advance. She has a lot of plausible deniability. I don’t see why they would have involved her, it would make it too hard for her to seem surprised when it happened. Plus, from what I read she was the golden child. Yes, as everyone notes, Wendi had a reason to want him out of the picture. But Donna did, too, independently. Maybe even more so. I think Donna did this with Charlie out of desperation and thinking she knew what was best for Wendi and the boys. I think Wendi did not know the hit was going to happen, when, where, or how. There is no evidence linking her to any money transfer, no phone conversations, nothing to tie her to anything in this case, so far. I think when she sits on the stand and says “I don’t know who killed him,” she can do so with a straight face, because “technically“ she doesn’t. She wasnt there. She didn’t plan it. She doesn’t know how it went down. Even if she could “stop the madness” and go to the cops, what could she tell them? If Charlie and/or Donna didn’t tell her anything, all she could say is “I think my brother did it.”. Charlie has already thought of this, it’s one of his scenarios in the Dolce Vida. And he’s right. Let’s say she does say “my brother did it,” they’re going to ask her what proof she has, and what can she say? Nothing. She may suspect, (she does in the police interview), but she “technically” knows no facts. That said, I could be wrong. She could be a very good liar. it’s extremely suspicious that she drove by the house, and that she told the cops about that, almost immediately when she was called in. It’s suspicious that the killers knew Dan was going out of town. (One explanation is that Donna asked her about this without telling her why she wanted to know. Or, she just told Donna, because she’s very close to her, and she was probably upset that he was going to visit Amy and so she mentioned it. I think theres nothing about that marriage, and their schedules, that Donna didn’t know.) I think that Wendi was deliberately kept in the dark, and I think this worked, at least until the arrests were made In 2016. (You can hear Donna on the wiretaps talking about how she doesn’t want Wendi to ask about why she suddenly has to go take the boys to see Charlie in the middle of the day). Once the arrests were made, especially when she saw that they had arrested Katie, I think she refused to learn anything about what happened. I do think that she isn’t stupid. She has to have put it together by now. She should have cut off all contact or cooperated at that point. But there isn’t enough to convict her unless there‘s evidence we don’t know about. I do fault her for not coming forward if she did learn after the fact.