I have had my own horrible misconceptions about BB and it wasn't until I was speaking with a friend about a family member of mine that I realized "typical behavior" is not so easy to define.
It's so easy to grasp at straws and attempt to put together what we consider to be "logical" pieces of a puzzle that makes absolutely no sense...human nature.
But, once again, we don't all react the same to every situation and there are a whole lot of variables that are a driving force to why we respond the way we do: emotional stress, lack of sleep, illness, life experiences...the list goes on and on.
At the end of the day, I probably make a horrible detective, and most of us here may be blown away when it comes time for trial.
Prayers for Missy's family and I am so sorry for your loss.
I really wish I would have stepped back and paused before posting some JMO's, especially with the new info.
I hope that the police are closer to the perp than we realize. Whoever did this deserves the top penalty, whether TX chooses death or life without parole.