More than one million people have viewed a video from 2015 of Faidley's then 6-year-old daughter, Ellie, opening her Christmas gift: A handmade "mer-baby" doll Faidley paid $500 for on Etsy.

What lies underneath one doll's diaper has a lot of parents upset. The "You and Me Mommy Change my Diaper" is an anatomically correct baby boy, which means the doll has male genitalia. The doll is ...