Please tell me you didn't document what you saw, without an intervention. And, Please tell me you followed-up, but you are just worried, like you stated, that you over-reacted. Family members often do "know their patients," and their service to the patient is awesome. That said, it is our duty to advocate, and be their "care managers." If you did the wrong thing this time, just suck it up, and learn from it. BTW, did you look for a recent CBC? Or an old bleed on the H&P? A recent GI work-up? The chart can tell you a story as well, sometimes they are aware of this stuff, but if she was a new admit, You were her safety net. This is how nurses save lives. Its in the "Little" things, that turn into "big" things, and they are so much easier to deal with as "Little Things." Good Luck in Your Career, Welcome!