[TOMT][SONG] Acoustic guitar, female vocals, 'bathroom mirror'

Title has basically the extent of what I remember of it. Heard it in ~2013/14 in my work bathroom on a radio/playlist with a lot of indie-ish stuff. Vocals were usually soft including the part where she says 'bathroom mirror', but it would get louder/layered during parts where she'd sing with a sort of haunting melodic quality for a few notes/seconds at a time. Otherwise, the notes she sang were generally pretty close together -- not a lot of variance in notes/pitch as far as I remember.

Guitar was plucked, not strummed, a bit like 00:17s-00:37 in this song (linked to start at relevant portion) -- https://www.youtube.com/watch?v=5CypGcJiGik&t=17s