These words seem to be adapted from a blues ballad called Delia (who knows what that was adapted from). I've got a recording by David Bromberg and two versions in a blues guitar book, one by Blind Willie McTell. I've submitted a version to DT already, it may be in the next release. The similarities are that Delia gets shot, the silver cup verse, the graveyard verse, etc. But the refrain from Delia goes "She's all I've got is gone" or "All my friends are gone" or similar.