The speaker takes the fairy tale of Rapunzel and flips it. Instead of waiting in a tower for a prince to arrive, she shrugs at his lateness. Her hair is short, so there is no braid for anyone to climb, and she admits she is happier alone than she imagines he could ever make her.
The second stanza is where the poem turns. The original Rapunzel longs to be found, rescued, and shown the world. This speaker wants the reverse: to be lost, forgotten, and left alone. The shift from "found" and "rescued" to "lost" and "forgotten" is the heart of it, since those words usually sound sad but here they sound like relief.
The mood is dry, cool, and quietly defiant. There's a little humor in "taking a while," but underneath it is a calm confidence. The speaker isn't lonely or bitter; she simply likes her own company and would rather keep it.