Sjofn lives in a log cabin in the Chugach Mountains of Alaska where she writes, sings, and records her songs. Sjofn is noted for making raw, lo-fi, melancholic, and often quirky little songs.

Her band, Mountain Mission, features Sjofn (vocals, guitar, banjo, ukulele), Paul Monserrat (clarinet, tin whistle, banjo, vocals), and Leif Ericson (fiddle, guitar, mandolin, and various sounds). Wash-tub bass player Christina Brown is also a frequent guest player.