I believe that if we had done the same thing wrt violence from the beginning she'd never have developed this problem. We overreacted, and we are still paying for it.
It'll take a while, but a withdrawal of energy and attention - including the talk (she gets the rule by now) will, eventually, do the trick. I would keep the 'no-computer' rule in place, and I would strongly recommend adding praise for every time she controls her hands while she is feeling strong feelings that should help build that inner strength.
Hugs
Grinity
