I'd echo much of the advice you've already received, but couched in different words. Reactions like hers are often based in fear. Ask her what bad thing she is afraid will happen as the result of you wearing a kilt. You'll probably be able to assuage her fears. Also consider that what you've heard from others may not be exactly accurate, so ask her directly about what she's saying and thinking. Finally, even nice people can act rudely with a little too much alcohol. Could this have influenced her behavior at a dinner or party?

I don't agree with the sentiment that you're not ready to wear a kilt. I'd hope the responses you receive here help you in that endeavor, not discourage you.

Abax