I found it! Google came through after all. It's a short story in an anthology called The Best of Dreams of Decadence by Diana Pharoh Francis. I guess I must have remembered the review by member Lenore D. "
My favorite was "All things Being Not Quite Equal" by Diana Pharaoh Francis...about an ugly contrary girl hoping to become a vampire in order to get their "animal magnetism" for the opposite sex...but instead is now an ugly vamp with frizzy hair. And, its hard to eat when you can't seduce your prey. There are compensations though, as she can do partial shape changes, has freakish strength, even for a vampire, and can't "hear" the mind calls and controls of other vamps - including the extremely handsome de facto ruler of the vamps.