One thing I love about Rosalina is that although she is alien (even godlike) in a lot of ways - with her cosmic powers, 1000+ year lifespan, etc. - her sentimentality, past struggle with grief, and enduring love for her family arguably make her the most human of the Mario cast.
ALT "No battles are more intense than those we fight within ourselves..."
ALT "Don't cry, OK? Your mother's waiting for your tears to dry."