When she was fourteen years old, she received a bass guitar for Christmas and began playing Nirvana and Green Day songs with her brother who played guitar.
At sixteen, Mosley was kicked out of her home after a fight with her mother involving the police, and moved to Gulfport, Mississippi to live with her grandparents. There she attended high school and joined a band that was in need of a bass player. She went on to sing for the band, and picked up guitar so she could write her own songs.
During that same year, she went through bouts of depression and had suicidal tendencies. "I lost my boyfriend, I lost my brothers and sisters that I watched every day, and I lost my drugs that I did. I really felt like that was the end," she said. "So I decided to kill myself the next day." After her grandmother forced her to go to church, Mosley experienced something supernatural that brought her to God. "My life totally changed after that."
"I used to be in a really negative band, and that seemed to almost fuel my emptiness because that's what the songs were about." After a while, she quit the band and began playing by herself.