A live person, or two or three (not "the hand.") to humiliate her early, often, and persistently, every time she opens her mouth, or tries to be "part of the conversation."
Preferably this should also happen in the wild. In public, like at Panda Express, Cheesecake Factory, the waiting room at the doctor's office, the grocery store, etc.
Early. Often. Constant.
Because it ain't going to take just two or three times. Hambutt needs to be intimately acquainted with live person, real time, LIVE and loud humiliation.
But for some reason, no one will do that. Oh well... maybe meth mom will when she finally snaps.