You’re not the asshole, but I understand why she panicked. Throwing around speculation about an unlawful drug use can and has destroyed MANY nurses’ careers and/or lives and that’s damage it’s easy to do & almost impossible to undo. Not that you were throwing it around; she was exactly the right person to talk to. But she’s right to be scared someone thinks she has a problem and she should tread carefully (and knock it off if she really does obvi, but that’s a given)
Yeah sometimes you just have to weather through the silence when theyre mad at you and continue to try to guide them out of their addiction (if you yourself can handle the mental load of being a “guiding” force in someone elses problem. Sometimes just being there for them after theyve been upset/cruel to you is enough to snap them out of it)