The speaker is talking about a man whose drinking has swallowed up his livelihood. "He drank his business" is a blunt, almost darkly funny way to say he lost it, and the rest of the poem reads like the speaker handing over whatever remains. The list is odd and telling: "my poor housekeeping," "my scar of purple," "my purse," and finally "my house all night." The first two sound like private shame and a bruise or old wound, so the speaker may be offering up her own failings and pain along with her money.
The tone is hard to pin down. Words like "I left him" and "I promise" could suggest leaving a relationship, or simply leaving things in someone's care for the night. The poem doesn't say which. That uncertainty is part of its mood: tired, wary, and quietly generous. The speaker seems to give in to the situation without anger, offering everything and keeping only a stiff, bare dignity. The short lines make it feel like a confession.