Aynsley began playing fiddle at the age of 9. She was introduced to bluegrass in her early teens, and quickly fell in love with the music. In order to further hone her craft, Aynsley enrolled in East Tennessee State University's Bluegrass, Old Time, and Country Music Studies degree program in 2013. She graduated in 2017 with an additional bachelor's degree in English, and completed her master's degree in Appalachian Studies in 2020.
Aynsley is also an experienced contest fiddler. She was Blessed to win the Grand Master Fiddler Championship in 2015 in Nashville, Tennessee, and in 2017, she also became the Canadian Grand Master Fiddle Champion, making her the first person to win both competitions. She also played in 2016 on the Grand Ole Opry.
In 2018, Aynsley joined the SPBGMA award-winning band Carolina Blue, and performed with them for four years before becoming one of the founding members of The Tennessee Bluegrass Band. She also received the 2018 IBMA Momentum Instrumentalist of the Year award. Aynsley spends her time off the road as a private fiddle instructor, session musician, and author.