As easy as it may seem to avoid that one toxic co worker. I believe in approaching said individual when it compromises the care that is given to a patient. Sadly, because she does not have her license yet, the constructive feedback is taken harshly. I take great measure to thoroughly think about what I am going to say and how I am going to approach the situation, but I do not see any positive changes in her care to patients. I have heard attending and others make negative and toxic comments about her but the issue continues to cycle. What suggestions can be given to avoid throwing off the fun dynamic of the workplace without compromising the care of the patients.