[8] Upon graduating high school, she attended the Clive Davis Institute of Recorded Music at New York University (NYU).

[6] She took a year-long leave of absence and moved to Nashville, Tennessee, to pursue music full time.

On a video, Fletcher stated that her family last name was 'Fleischhauer' but changed to 'Fletcher' and was shocked when informed that Fleischhauer was actually the German equivalent of 'Butcher'.

In the boot camp round, Simon Cowell paired Fletcher with Hayley Orrantia, Paige Elizabeth Ogle, and Dani Knights to form the group Lakoda Rayne under mentorship of Paula Abdul.

[11][12] In 2015, she moved to Nashville, Tennessee and began collaborating with producer Jamie Kenney, during which the single "War Paint" was released.

[16] She released her single "Undrunk" on January 25, 2019 and subsequently made her television debut on The Tonight Show Starring Jimmy Fallon.

[22] In October 2019, Fletcher was announced as an opening act for Niall Horan's Nice to Meet Ya Tour, set to begin in 2020 before it was cancelled due to the COVID-19 pandemic.

[29] Fletcher released "I Believe You" in support of sexual assault survivors in March 2018, penning a #MeToo-inspired letter to Billboard.

[31] In March 2017, she told Billboard "I definitely identify within the LGBTQ community, but as far as putting a label on like gay, straight, bisexual, lesbian, queer... it's all in the family and spectrum, and sexuality and gender is not black and white.

"[3] In December 2021, Fletcher stated that she identifies as queer and that she is "attracted to strong feminine energy which [sic] just so happens to more likely than not be women".

[39] She cited Bob Marley,[40] and fellow New Jersey artists Bruce Springsteen, Bon Jovi,[41] and Patti Smith[42] as influences.