No, you were not out of line in any way and you *did* try to set boundaries - she just interpreted any sort of attempt to stop her from doing exactly what she wanted as rude!

I have run into that type before as well. It's too bad they can't tone it down a bit with the complaints and incessant demand for attention.

I would prepare myself for her to call again when she realizes that she has chased yet another one away -- and she'll probably ask if you are ready to apologize!