She clearly needs to start her own country where no meat eaters are allowed. Write it into their Constitution and live miserably ever after.
There are islands for sale that would be perfect for her and her closest 4 or 5 other veg heads.
I doubt an island would work for a veg head extremist. At low tide, the aroma of sea life would be too strong. With me it would make me want some clam chowder and oyster shooters.