Withholding Information?

Question for you all, but the story first. After receiving shift report from my charge nurse we heard the floor nurse was calling the on call MD. Both the charge and I asked why and for which resident her reply was simply don't worry about it. I asked again and she told me something like "it doesnt concern you" My response was "if it concerns one of my residents it does" she continued to ignore my questions, I then asked again if it concern my resident and she refused to answer, I asked if she was going to wait for the MD to call back and she didn't answer, finally she completed her call then walked away so we could do the med count. I again asked her for the info and she simply ignored me so I told her I would not do the med count until she answered my question. She walked to the supervisiors office and told the supervior I was refusing to do the med count, I explained the situation and the supervisor questioned her she told them it did not concern me and they asked if she was going to wait for the call back, to them she stated yes and walked away. My question is this, is this nurse in violation of the law for withhold patient info for the nurse taking over. I know it was childish and just plain unprofession but is what she did illegal? I found out afterwards that she had called the MD to have a narc order renewed and to get a one time administration order to give the resident a dose until the new order was signed.