I'm much more inclined to think the 'baseball bat' was the murder weapon. I put it in quotes because it looks like a softball bat to me; it's fatter than a baseball bat.

We know a few of Patsy's friends played in the Moms Gone Bad softball league. Any chance that the bat found outside belonged to someone on the team?

I assume the BPD looked into the whereabouts of Patsy's bat, if she owned one, and since the Ramsey's have said they don't recognize it and the BPD has never sourced it to the Ramseys...maybe it belonged to one of the Moms Gone Bad.