There are times when neither a poem or a piece of prose seems apt for the subject—try a prose poem.
From Poets.org Poetic Form: Prose Poem
"In the first issue of The Prose Poem: An International Journal, editor Peter Johnson explained, "Just as black humor straddles the fine line between comedy and tragedy, so the prose poem plants one foot in prose, the other in poetry, both heels resting precariously on banana peels."
You can check out the journal and read some contemporary prose poems:
The Prose Poem: An International Journal
The Prose Poem Project is an on line and print journal devoted exclusively to the prose poem.
On their site they define what a prose poem is and what it isn't.There's a short history of the prose poem, some recent examples.
Submission Guidelines for The Prose Poem Project
Call for Submissions of Prose Poems for an Anthology entitled Classifieds to be published by Equinox Press