What does Charis mean?
From Greek 'charis' (χάρις) meaning grace, kindness, or charm. In Greek myth the Charites (Graces) were goddesses of grace and beauty; the root also underlies the word charisma.
What does Eleni mean?
Modern Greek form of Helen/Helene. The etymology is uncertain: most often linked to Greek 'hele' ('torch') or a root meaning 'shine/bright', with some scholars instead proposing a connection to the moon or a pre-Greek word of unknown meaning. The 'torch/bright light' reading is traditional but not settled.