Given my history on this topic, it might be surprising that I was inclined to be sympathetic to Mom.
Until I found out the nurser in question is this close to being two years old.
And is named River.
So much for that. ;)
That did it for me, too. People who name their child "River" can be presumed to be unreasonable in any situation, (she says with extreme prejudice :-). Why not just say, "Thanks for the blanket, hon," and get on with it? Instead, she had to make a scene.