I work in a ALF. We have a prn LPN that has been a nurse for over 25 years although she has not always worked as a nurse. She worked for our facility when we first opened then left to go some where else and has now returned as prn but she works frequently. My questions is, since she has been back she has made numerous errors that have been witnessed by other nurses. We report them to the DON and she either laughs them off or says she will talk to her but acts like she doesn't believe this person could be making these errors. When she does talk to her she pretty much lets her know who reported the error and then it difficult working with her I know the DON is not handling this professionally but just how many errors can be made before you go above the DON? I am not talking small errors either, in 1 morning she did a accucheck on a person who is not diabetic because she got the people mixed up, brought me a syringe to verify an insulin dose and had it in a tb syringe, gave a person a ativan at 8am when they get it only at 12n and 9pm.