It would be better to call her Ruirui. Ze: (zé) refers to kindness, grace, brightness and moisture. The name means receiving nourishment and grace, bringing good luck to you, blessing you with good things from heaven, and a bright future.
Rui: (ruì) means auspiciousness and good omen, and the name means the arrival of happiness and auspiciousness.
Rui Rui means happiness, good luck and peace in life.