Seems like she would have just called JW then, though - right? To call LE and give them the text/photo without JW knowing (which he didn't apparently) is jumping over his head. And also making him look bad…. I've always wondered about this detail, and what it means.
I think JW made himself look bad. She did the smart thing, which is to not cover for someone who seems to be neck deep in a crime (even if he wasn't). I'd hope if he is innocent that he would understand why she did what she did and not hold it against her. If she knew right away that something wasn't right and notified LE, she showed a lot of courage. She knows him and his history better than we do, including why he was fired a short while before the murders and what he may have been sharing with her that made her worry about the texts. JMO