Had no friends growing up

Became lonely, despite being worshipped by her kingdom, the New Moon Kingdom

She found a mirror that granted her eternal beauty, making her feel like she was the only one she need. She no longer felt lonely. 

She tried to take over the White Moon Kingdom, so they locked her away in a mirror, and she felt lonely again

Will attack if you are sympathetic towards her

Obsessed with tormenting people with nightmares

Her heart is filled with hate and anger