I think this is pretty common. It is clearly wrong, and annoying as all get out. But, do you really want to get involved? If so, go ahead and report it. Maybe she'll get a nasty letter or something, but this one instance is just a drop in the bucket.
According to the ANA
, its illegal. At least in most states. But I really don't get how this is enforced. You report it to the board of nursing, which has no jurisdiction over non nurses.
It is surprising in some ways this is not taken more seriously. If I am in a bar, and want to impress somebody, I can say I am a lawyer. But, if I say I am a lawyer and give legal advice, that is a pretty big legal problem. Seems the same might hold true in any area in which the weight of a person't words hinges on their qualifications.
It would be interesting if you do file a report- if so, why don't you track the results and post them here.