Eleanor has an affinity for cherry blossoms, frequently hanging them from her antler-like horns. The reincarnation of the Angel of Mercy, she is apparently the champion of the impure, repentant souls, a contrast to her twin brother’s role as patron of the innocent who had suffered.
I still need to iron some things out, but they’re Eleanor and Flynn are both still Asriel’s children, and have the same domains of Mercy and Salvation, respectively.