The speaker addresses someone named Helen, who appears to be asleep, or perhaps gone, and who looks peaceful at last. The poem suggests she has finally put down years of weariness, and the speaker finds comfort in that calm. Yet there is an ache underneath it. The speaker admits they never actually saw her this way ("my eyes never layed upon you"), and that their memories of her are slipping even as they feel they remember her more. That contradiction gives the poem its pull.
The title's "Goddamnit" hints at frustration or grief the speaker can't quite hide. The sleep may be literal, but the imagery of rest, silence and "soon" joining her side makes it easy to read it as death. Either way, the speaker takes over the burden of staying awake and facing the world. The mood is tender and tired, quiet but heavy, with a sense of loyalty and a loneliness that the repeated final line only deepens.