It's impossible to sort out an accidental miss from an "accidental" miss without knowing the intent of the practitioner. For which the default and the strongly reinforced ideal is "don't hurt the patient", so accidents in difficult tasks can be accepted without malice.

Then there's the tweet, which whilst not explicitly stating it was purposeful is still way too close to an admission that they wanted them to suffer. Who knows if she actually did it deliberately or not, but she has now given patients cause to doubt any accidents that occur from here on out are without malice. The tweet alone is enough to break patient trust and her public reprimand is not only justified but necessary to undo the damage she did.