There is speculation that Blixen may have recited a poem she wrote herself, as she was known to be a talented poet. However, there is no evidence to support this theory.
It's important to note that the relationship between Blixen and Finch Hatton was complex and their lives are often romanticized. While there is no record of a poem being recited at his burial, it's possible that Blixen did share a poem privately as a tribute.