Folkteller

Danica was always an adventurous and rough girl. She had no issue playing in the dirt, eating bugs, roughhousing and using her imagination to envision a fun scenario for her and her friends to play in. She enjoyed everything about her childhood very much and hoped she could pass the same onto her children one day. But as the years passed the world changed from her time as a kid, it just became increasingly depressing and dark and kids were even affected by it. Still resolute to give her kids a good childhood, while dating the man she thought she'd marry she nearly crushed in a freak accident.
  While biking a torrent of rain and then lightning came down. A tree was struck and partially landed on her from the back, puncturing her abdomen. She woke up in the hospital to the news that will fully recover but never have kids. She went into a depression for years that at times got so bad she couldn't function, and had to check in to a mental health facility. She eventually would start feeling better, her now husband still with her as they considered adoption. But her background check flagged her stay at the facility and denied them the option. She couldn't handle it, left her husband so he could still have a chance at a family and moved away.
  While recovering from this setback, she would see constant news threads of school shootings and child suicides that made her want to drop out of society. She began day long hiking trips to get away from everything. On one of those trips up a mountain she fell into a cave opening that covered for nearly a century. Insider were signs of people who once gathered there, and a single alter with a nondescript pipe on it. Once she got close the pipe filled itself and began smoldering, smoke rising above it as it's carvings unveiled themselves at her touch.
  As she blew into into it the room quickly filled itself with images of her own childhood. The good times she had, and the childish fears of monsters and boogeymen under the bed that came with them. Were then replaced by sad images of children today, and their childhoods being erased by constant fear and worry from things only adults should deal with. The smoky images then swirled around her, went back into the pipe and then into into her. Her eyes look like starry skies and her hair grew to 10 foot long braids, and her sudden power to create childlike fears and dreams seemed like the perfect gift to her. So she could give kids their childhood back in one way or the other.

She wants kids to have a normal childhood relative to what she considers a normal childhood. She doesn't kids worrying about dying or being depressed, she wants them to be scared of monsters and fables and folktales. She wants kids to be kids, so if feels like they aren't she begin sending out these childish fears to scare them, hopefully taking their minds of other things. She may even trap them in her own dimension under the bed until she feels like they are childlike enough for her, at that point she'll create a hero to save the kid and take him back to the real world. If the kid never changes, she'll keep them there until they are adults and then kick them out back into the real world.