people died, and others lost their limbs because of what happened. it's not funny, and it will never be funny to them because the ones who were lucky enough to survive, still have to deal with that trauma and/or not having one of their limbs for the rest of their life.
whether or not she intended to, it comes across as mocking what happened to the people in boston. zero tolerance man, that shit should never ever be acceptable or allowed to fly. call me up tight, but put yourself in their shoes