Simply tell her, that as future Lord and Master of the Household, you are putting your foot down, and wearing the Kilt - and that's that! End of discussion!

Then.........RUN, MY FRIEND! RUN LIKE THE WIND! AS FAR AND AS FAST AS YOU CAN! DON'T EVER LOOK BACK! I suggest either running away to the Circus, maybe to Sea, or perhaps a tiny hand built shack in the wilderness somewhere. She'll never find you then.