CMS -- You did nothing wrong. Zero. Zip. Nada.

As you describe her behavior, it was what we used to call "stuck up" when I went to HS a long time ago. Come to think of it, her behavior reminds me exactly of how people behave in HS -- before they have had to confront any harsh realities.

She may have a lot of "stuff" going on in her life -- lots of superficial glamor -- but it doesn't sound like there's much there to me.

Time for new friends.