I think she's playing with the lowest strings tuned to C#/G#/C#. She never plays the upper strings as far as I can tell, but it's essentially Drop-D tuning down a half step. This makes the five-chords easier to play (not that they're hard in the first place), and gives the low-E string that slack sound. But it's a rare tuning so I'd play it tuned down a full step. Chord names relative to full-step-down tuning. https://www.youtube.com/watch?v=A4Xz1phmKew [CHORDS] TUNED FULL STEP DOWN | C#G#C#xxx TUNING B5: 799xxx | 888xxx G5: 355xxx | 444xxx E5: 022xxx | 111xxx F#5: 244xxx | 333xxx ============================================================================================================== [Intro] B5 G5 E5 E5 B5 G5 E5 G5 [Verse 1] B5 G5 E5 If you could do anything B5 G5 E5 You would ruin the best things B5 G5 E5 You would spoil the ending B5 G5 E5 G5 You'd dissolve cotton candy [Verse 2] B5 G5 E5 There you are in the rearview B5 G5 E5 Faking landings on the moon B5 G5 E5 Here we are in the driveway B5 G5 E5 G5 I'm deciding which tree to run us into [Chorus] B5 G5 E5 B5 G5 E5 G5 Oh no, you scratched until I bled B5 G5 E5 B5 G5 E5 G5 I hope you choke on your own spit in your own bed B5 G5 E5 Cause I know B5 G5 E5 I know how it ends G5 B5 G5 E5 We're not gonna be friends N.C. In dog years you're dead [Break] B5 G5 E5 F#5 E5 F#5 E5 F#5 E5 B5 G5 E5 F#5 E5 F#5 E5 F#5 E5 B5 G5 E5 F#5 E5 F#5 E5 F#5 E5 B5 G5 E5 [Verse 4] B5 G5 E5 If you could be anything B5 G5 E5 You would be the worst thing B5 G5 E5 A dry patch when you're sledding B5 G5 E5 G5 And waking up with my lip bleeding [Veres 5] B5 G5 E5 Here we are in the driveway B5 G5 E5 Deciding I have more to lose B5 G5 E5 But you should go home to Chicago B5 G5 E5 G5 And take a long walk off the Navy Pier [Chorus] B5 G5 E5 B5 G5 E5 G5 Oh no, you scratched until I bled B5 G5 E5 B5 G5 E5 G5 I hope you choke on your own spit in your own bed B5 G5 E5 Cause I know B5 G5 E5 I know where it ends G5 B5 G5 E5 We're not gonna be friends N.C. In dog years you're dead [Outro] B5 G5 E5 F#5 E5 F#5 E5 F#5 E5 (Dead) B5 G5 E5 F#5 E5 F#5 E5 F#5 E5 You're dead B5 G5 E5 F#5 E5 F#5 E5 F#5 E5 You're dead B5 G5 E5 You're dead
Source: https://tabs.ultimate-guitar.com/tab/daddy_issues_us_nashville_tn/dog_years_chords_2693868