I think it was something about Jodi said someone told her he was dating someone and she wouldn't tell who...
IMO she had read his blog on the 18th, got upset...he was talking about finding a wife! She hacked his email, found out about Mimi, pics of her...holy crap she's the one going to Cancun!
They start fighting about it...he is pissed....sends the message.
Sociopath? Worst thing ever? She would show him...
She steals gun, rents car, ga cans etc.
Drives and gets in the house, she looks on his computer for more info/evidence
Plays the youtube video at 4am then crawls into bed with him...says she's sorry they fought..she's driving through on her trip, brought him a check for the car, she'll be on the road in a few hours, can she just sleep there?