HI, I am sorry for your situation. I wish if I can help you somehow. I really do not think that your license can be revoked but here are my thoughts:
First, is there more behind this incident( s ) that is going on your floor where you could be the one targeted?
Did you manager ever tell you about that letter written by other nurse? If not , and if it is not written as the incident report and timely discussed with you making you sign it as acknowledgment .... they can eat it.. It is pure set up... If however, you had these discussions before then I can see them firing you , and if they do not fire you , then by all mean as soon as this drama is over - RUN!!!!
It is just too much ado about things that can and did happen on every unit I would say once a month?!! This is the nursing .. you did what you could .. you reported .. you documented ,... you discussed with doc.. and if they do not like it, is it more because they do not like you ,.. maybe???
Anyway, I would go to employee representatives and talk with them to see what they can offer me as their help.. Do not talk with people about this AT ALL. Every thing you say it will be held against you .. my God I sound as police but it WILL. Write every little detail that happened for the first time you laid your eye on that patient and everything after that .. we tend to forget especially if we do not like what we need to remember, make time line, organize chart with all people involved , their relationships, their comments etc. Maybe it will give you AHA moment who was behind all of this even if it is actually you. Knowing it will help you deal with it.
I wish you all luck in the world. I know it is not easy and I pray to God to help you .. Be strong.