I advised the DON and administrator ( was a nursing home/ long term AFL) they advised me that they would indeed investigate.. The nurse in question was given a drug test and failed her "lover" was/is a local GP and covered for her with fake office notes..

I was written up for "reporting her" and I found a new job with in a month or so...the druggie nurse also left about 2 months later for a job in a larger city. The terrible thing is... a few months after she started her new job , she was under investigation for "missing narcs" while this investigation was going on she gave the wrong medication to a patient and that patient died.

Sad but true story ...