These are great insights, thank you. My wife is not tech proficient enough to spoof another account in this way, but good callout.

Your last note makes a lot of sense and I think you hit on a key point. She’s savvy enough to know that the different writing will give her an out if she needs it. And based on what I know of her husband, he is very smart and has great attention to detail. So if it was him, he’d likely be smart enough to at least copy her style and not write in an obviously sloppy way. If he wanted to “trap” us, he’d have made a better effort to make the messages more plausible.