Procedural error- bloodborne exp issue?

I work in a small community hospital here in Florida. The other day 4 of us were "on assignment" placing PPD's for the staff. This was a full day event- doing over 200 for the day.

I just found out that my friend apparently made a mistake. She went to inject the serum under the skin and noticed that needle moved out of the skin and consequently did not administer enough. So she withdrew the needle from the skin, then used the same needle to draw up more serum from the multi dose vial- then continued on. Therefore potentially exposing everyone else that follows with some blood borne pathogens, correct?

She is normally a very diligent, focused nurse. I know this was just a "slip". Do you think she will be disciplined? If so, what can happen? We are testing those possibly affected. An incident form was filled out and the hospital administrators are investigating. Thoughts?