I have known this woman for a couple years and she is probably closer to an acquaintence than a friend. We work in the same area and I talked to her on a fairly regular basis. About 6 months ago, I noticed a change in her demeanor. She was behaving erratically and kinda scattered. She always seemed to be going to an immediate care or a doctor. She started to just whip out her norco or oxy and seemed to be taking them a lot. I know her brother pretty well and he lives a couple of hours away, do I call him and tell him that I am concerned?