She tore away, lashing out with the dagger.
People who can relate to my crying jags, my lashing out at those I love.
The temptation may be high to let the irresponsible coworker know just how irritating his or her lack of reliability is but lashing out will make a negligent coworker even more defensive.
Parents can suggest that, for instance, the child ask an adult to intervene before lashing out at a classmate.
If someone does lash out, it's a good idea to keep in mind that they are going through immense pain, and try not to take their lashing out personally.