You know, I gotta agree with what everyone has already said. You can't pick your family. People are dumb. You can't change people's minds.

You know, it's funny. The only member of my family who says anything even remotely negative about my kilt wearing is my brother... and he's got the Campbell clan badge and the Lion Rampant tattooed on his neck!

I just tease him right back about wearing his pants down around his knees... but then again, that's the kind of relationship he and I have.

Let her speak her mind, correct/educate/enlighten her where possible and approprite, and above all else,

KEEP WEARING YOUR KILT WHEN AND WHERE YOU WANT!