I had to read this poem several times before I got a grip on it. I believe that the theme to this poem would be the innocence of a small child and her beliefs. The young little girl in this poem is showing her innocence by believing that even though her sister moaned and is now buried in the ground in the church yard, she is still looking for her siblings. I realized that the poem is about a little girl who is searching for her other siblings. She believes that she and her siblings total seven in number. I believe that Wordsworth is being taught by this little girl that he should look around him and see her other siblings. While the two siblings are dead and buried in the church cemetery, she believes that by being in the cemetery at her sister's headstone where she and her brother used to play, she is still there with them.
The poem has a verse which reads "The first that died was sister Jane;In bed she moaning lay,Till God released her of her pain;And then she went away." When I read this I see biblical background, even with replacing the word God with she. This was very powerful and spiritual to me. This verse has several euphemisms when talking about her sister Jane going away after "God released her of her pain"
This writing does not have your typical romance of a boy and a girl who share a love in a story where there is a force who keeps the two of them from sharing their love for one another, it does have some of the same obstacles that two people in love share, just this is a different type of love. The romance int his story is the love that the eight year old little girl has for her two siblings who died and went onto heaven. While the siblings physical body is not with her so that she can touch it and physically play with them each day, their spirits still reside on Earth with her and she spends her time with them. She believes this so much that she tells the passer by (Wordsworth) this.