I don't know the dolls you are speaking of, but I think you may be judging the mom a bit harshly. You may see people who are different, another ethnicity, or differently abled. She may not be a fan of the current fantasies, but sees the dolls as monsters, scary, nasty, Hammer Films kind of monsters.
To her they might fall into the category of snakes, spiders and public speaking.

For instance, Zombies are popular right now. They are considered fun. They make me very uncomfortable. You can have fun with zombies. I'll find other things to do, thank you. Does this make me evil?

We don't know what pushes other people's buttons.
GHR