If a teacher points out a problem your child is having in school you wouldn't love your child any less would you? One anonymous person's opinion is nothing to be concerned with. You love it and your friend thinks it is show worthy. I would trust a valued friends opinion more than a judge who looks at hundreds of quilts and may have been hungry or tired and cross eyed by the time she gets to your quilt.
Do you have a picture of your quilt? I would love to see it.