What does Charisse mean?
Generally a French-styled elaboration of Greek 'charis' (grace, kindness). Some sources propose an unrelated derivation (a cherry/Latin 'ceresia' link, or a feminine of Charles), so the grace meaning is the most-cited but not undisputed.
What does Pandora mean?
From Greek Pandora, combining pan 'all' + doron 'gift', meaning 'all-gifted' or, by an older reading, 'all-giving' (giver of all gifts). The scholarly sense is disputed between 'gifted with everything' and 'giver of all'.