Writing like ethel cain

Does anyone know the kind of instruments ethel cain uses to write songs such as "inbred," "two-headed mother," or "dust bowl"

And what kind of free plug-ins i can use to achieve a similar sound.

She sounds influenced by duster and the grouper, and I'd be thankful to get any advice on how to make such music, considering i just started this and the best thing i can do is play the piano.