I do know of such a nurse. Back when I was still a CNA there was an elderly nurse, she was just mean to the staff and no thought really to the residents at the nursing home. Literally she lived to try to get the aides in trouble. One night I messed up and missed getting b/p (that was my fault), but when she asked me about it and I explained to her that I would try to get it over the lady's long sleeve night gown as it was too hard to pull the sleeve up, the nurse grabeed me by the arm dragged me into the residents room flipped the overhead, blinding light on grabbed the residents sleeve and shaking her sleeve and ultimately the residents arm proceeded to yell at me "does this look tight? Does this look tight?!" The resident half asleep is looking like a deer caught in the head lights! She used to go around about 1 1/2 hours before shift end and rip the residents disposable liners and then go around an hour later to see if we shanged them, and if the ripped liner was there yell at the aides, nevermind that the resident wasn't changed because the were dry! She has even went around and poured water in the liners to see if an hour later we would change them, which we did, but that pour resident was subjected to this! I came to her with a bloody nose, I'm talking blood gushing out (don't know how it happened) and all she said was, "when are you laying down Mr. ____?" I told her, "ummm when I'm done bleeding!" And she said said nothing just walked away and then later wrote me up saying I was refusing to do my job! She even at one time would get so mad at all the aides and say "I hate it when I ask any of you to do something you say, It's not my resident" (which she is right no on should say that), but when I had a lady fall on the floor and bleeding everywhere she said, "not my resident" and went on she didn't even send help to me I had to sit there cradling this poor lady yelling for help.
Now it's not to say that all older nurses are like this, but there are some out there. And our best bet is too learn from them how not to act, but keep in mind alot of them crabby as they may be do have a wealth of info!