Rewatched the Wendi police interview and realized that I missed this before: It's only after Isom asks if he can download her phone (at 20:30) that she tells him that she's worried that someone could have shot Dan because he didn't treat her very well and also tells him about the Charlie hitman joke etc. Before Isom asked for her phone, she was generic about anyone having a beef with Danny (starting at 9:50), basically saying he's argumentative, rubs people the wrong way, but doesn't think anyone would hate him. I think Isom's request for her phone was a turning point in the interview.
I also just watched the part with her friend, Jane. Wow -- she got adversarial with Isom, saying basically "You'll discuss that he's not going to survive but won't discuss if anything was stolen (from Danny's place)? (2:29:41). Pretty nervy IMO. LE is clearly not going to reveal investigatory info to her and Wendi -- that is SOP! She also basically says that LE should look into Lacasse. Not surprised that soon thereafter she tells Wendi that she's being kicked out of the room. Clear to me that Isom told Jane to leave. JMO.